Ya Mei Bai

Taipei Veterans General Hospital · Division of Psychiatry

Objective Research evidence has shown that bipolar disorder (BD) and unipolar depression (UD) are both related to inflammatory dysregulation, but few studies have compared the levels of cytokines between these two disorders.Methods Study subjects were age- and gender-matched outpatients with BD or UD and normal controls (NC). Severities of depressi...

Risperidone has been reported to alleviate the severity of tardive dyskinesia, but without placebo control, the possibility of spontaneous tardive dyskinesia remission after discontinuing original conventional antipsychotics cannot be excluded. This 12-week randomized, double-blind, placebo-controlled study investigated the effect of risperidone on...

The aim of this study was to test whether the initial antipsychotic response to clozapine is related to subsequent weight change. This study was an 8-year retrospective chart review of 96 hospitalized patients with schizophrenia. Data on monthly weight change, initial clinical response, age, gender, clozapine dose, and concomitant use of mood stabi...

Schizophrenia is highly comorbid with obsessive–compulsive disorder (OCD); both conditions share numerous pathophysiological etiologies. We, thus, examined the risk of mental disorders in the parents of probands with schizophrenia, OCD, or both conditions. Between 2001 and 2011, we enrolled a nationwide cohort of 69,813 patients with schizophrenia,...

Background The risks of sexually transmitted infections (STIs) and teenage pregnancy in the offspring of parents with schizophrenia remain unknown. Methods From the Taiwan National Health Insurance Research Database, 5,850 individuals born between 1980 and 1999 having any parent with schizophrenia and 58,500 age-, sex-, income- and residence-match...

In this study, we examined the risk of sexually transmitted infections (STIs) among adolescents and young adults (AYAs) with borderline personality disorder (BPD). A total of 4649 AYAs with BPD and 46,490 age-, sex-, and socioeconomic-matched controls without BPD were enrolled from the National Health Insurance Research Database of Taiwan from 2001...

Importance Antidepressant responses and the phenotype of treatment-resistant depression (TRD) are believed to have a genetic basis. Genetic susceptibility between the TRD phenotype and other psychiatric disorders has also been established in previous genetic studies, but population-based cohort studies have not yet provided evidence to support thes...

Although several studies have examined a diagnostic conversion from major depressive disorder (MDD) to bipolar disorder (BD), only a few studies specifically focused on adolescents and young adults who are at the peak ages of BD onset. Data from participants (N = 130,793) aged 10–29 years who were diagnosed with MDD were extracted from the Taiwan N...

Objective Increasing evidence suggests a crucial rȏle of C-reactive protein (CRP) in the pathological mechanisms of suicide. Whether CRP levels may be associated with suicidal ideation (SI) among patients with treatment-resistant depression (TRD) remains unclear. In this study, we intended to explore the relation between TRD and SI. Methods Totall...

Whether proinflammatory cytokine dysregulation and cognitive dysfunction are associated with suicidal symptoms in adolescents and young adults with major depressive disorder (MDD) remains uncertain. We assessed the cognitive function and proinflammatory cytokine levels of 43 and 51 patients aged 15–29 years with MDD and severe and mild suicidal sym...

Aim Large language models (LLMs) have been suggested to play a role in medical education and medical practice. However, the potential of their application in the psychiatric domain has not been well‐studied. Method In the first step, we compared the performance of ChatGPT GPT‐4, Bard, and Llama‐2 in the 2022 Taiwan Psychiatric Licensing Examinatio...

Background: Limited evidence exists about suicide risk in persons with polycystic ovary syndrome (PCOS). Objective: To assess suicide risk in persons with PCOS, accounting for psychiatric comorbid conditions and age group. Design: Cohort study. Setting: Data from the Taiwanese nationwide database from 1997 to 2012. Patients: A cohort of 18...

Objective:Treatment-resistant depression (TRD) is not uncommon in older people. Brain stimulation, such as 4-6 weeks of repetitive transcranial magnetic stimulation (rTMS) or theta burst stimulation (TBS) targeting the left dorsolateral prefrontal cortex, has been evidenced as an essential intervention for adult TRD and also documented in the curre...

Objectives Despite mounting evidence demonstrates circulating endothelial progenitor cells (cEPCs) quantitative changes in depression, no study has investigated cEPC functions in major depressive disorder (MDD). We investigated the role of cEPC adhesive and apoptotic functions in MDD. Methods We recruited 68 patients with MDD and 56 healthy contro...

Background ChatGPT may act as a research assistant to help organize the direction of thinking and summarize research findings. However, few studies have examined the quality, similarity (abstracts being similar to the original one), and accuracy of the abstracts generated by ChatGPT when researchers provide full-text basic research papers. Objecti...

The role of melancholic features on the antisuicidal effect of 0.5 mg/kg ketamine infusion has remained unclear in patients with treatment-resistant depression (TRD) and strong suicidal ideation (SI). Whether ketamine diminishes suicidal ideation in patients with TRD-SI was also unknown. We enrolled 84 patients with TRD-SI, including 27 with melanc...

Objective Individuals with dementia are at a substantially elevated risk for mortality; however, few studies have examined multimorbidity patterns and determined the inter-relationship between these comorbidities in predicting mortality risk. Methods This is a prospective cohort study. Data from 6,556 patients who were diagnosed with dementia betw...

Background: Schizophrenia increases mortality from all causes and specific causes. Comprehensive research on modifiable risk factors for early mortality from multiple sources is needed. Methods: Taiwan's National Health Insurance Research Database, which contains claims data from a lifetime insurance program for the whole population, provided exten...

Background: Proton-pump inhibitors (PPI) are among the most widely used drugs worldwide. However, the association between PPI use and the risk of asthma remains unclear. Objective: To investigate the association between PPI use and subsequent asthma risk. Methods: We included participants from the Taiwan National Health Insurance Research Database...

Background Evaluate efficacy and safety of paliperidone palmitate 6-monthly (PP6M) for patients with schizophrenia in the Asian subgroup of a global, multicenter, noninferiority phase-3 study (NCT03345342). Methods Patients received paliperidone palmitate 1-monthly (PP1M, 100/150 mg eq.) or paliperidone palmitate 3-monthly (PP3M, 350/525 mg eq.) d...

Background: 10-Hz repetitive transcranial magnetic stimulation(rTMS) and intermittent theta-burst stimulation(iTBS) over left prefrontal cortex are FDA-approved, effective options for treatment-resistant depression (TRD). Optimal prediction models for iTBS and rTMS remain elusive. Therefore, our primary objective was to compare prediction accuracy...

Objective: Previous studies have found an association between klotho, an anti-aging hormone, and major depressive disorder. However, whether low-dose ketamine infusion alters klotho levels among patients with treatment-resistant depression (TRD) remains unknown. Methods: In total, 48 patients with TRD and strong suicidal ideation were randomly a...

Background: The role of neurofilament light chain (NFL) in treatment-resistant depression (TRD) is unclear. Whether baseline NFL concentrations are associated with the antidepressant effects of low-dose ketamine infusion has not been determined. Methods: The NFL concentrations of 71 patients with TRD and 17 healthy controls were assessed. Patien...

BACKGROUND ChatGPT may act as a research assistant to help organize the direction of thinking and summarize research findings. However, few studies have examined the quality, similarity (abstracts being similar to the original one), and accuracy of the abstracts generated by ChatGPT when researchers provide full-text basic research papers. OBJECTI...

Background: Evidence indicates that vascular endothelial growth factor (VEGF) and matrix metalloproteinase-9 (MMP-9) influence the pathophysiology of depression. However, whether low-dose ketamine regulates VEGF and MMP-9 levels and whether changes in VEGF and MMP-9 levels are associated with the antidepressant and antisuicidal effects of ketamine...

Background: Evidence suggests a familial coaggregation of major psychiatric disorders, including schizophrenia, bipolar disorder, major depression (MDD), autism spectrum disorder (ASD) and attention-deficit hyperactivity disorder (ADHD). Those disorders are further related to suicide and accidental death. However, whether death by suicide may coag...

Background: Whether pretreatment working memory and response inhibition function are associated with the rapid and sustained antisuicidal effect of low-dose ketamine among patients with treatment-resistant depression (TRD) and strong suicidal ideation is unclear. Methods: We enrolled 65 patients with TRD, comprising 33 who received a single infu...

This longitudinal study aimed to investigate the risk of subsequent autoimmune disease in patients with post-traumatic stress disorder (PTSD) in Asian population. Between 2002 and 2009, we enrolled 5273 patients with PTSD and 1:4 matched controls from the National Health Insurance Database of Taiwan, and followed up the patients until December 31,...

Objective Few studies have investigated the association between age of onset of severe mental disorders (SMDs) in offspring and the likelihood of diagnoses of parental mental disorder. Method We enrolled 212,333 patients with schizophrenia, bipolar disorder (BD), or major depressive disorder (MDD) and 2,123,329 controls matched for age, sex, and d...

Background: Prolonged intermittent theta-burst stimulation (iTBS) is effective for major depressive disorder (MDD). However, whether longer piTBS treatment in a single session could have antidepressant efficacy remains elusive. Therefore, this double-blind, randomized, sham-controlled study aimed to investigate the antidepressant efficacy of 2 dai...

Studies have demonstrated a positive relationship between antidepressant resistance and the progression of bipolar disorder. However, the influence of antidepressant classes such as selective serotonin reuptake inhibitors (SSRIs) and serotonin norepinephrine reuptake inhibitors (SNRIs) in this context has yet to be investigated. A total of 5,285 ad...

Appetite hormone dysregulation may play a role in the pathomechanisms of bipolar disorder and chronic irritability. However, its association with executive dysfunction in adolescents with bipolar disorder and those with disruptive mood dysregulation disorder (DMDD) remains unclear. We included 20 adolescents with bipolar disorder, 20 adolescents wi...

Whether current suicide risk or a history of attempted suicide is related to the antidepressant effect of a low-dose ketamine infusion remains unclear. In total, 47 patients with treatment-resistant depression (TRD), including 32 with low current suicide risk and 15 with moderate or high current suicide risk, were randomized to groups receiving a l...

Evidence suggests increased mortality rates among autistic individuals. However, risks of mortality, including natural-cause, suicide, and accident mortalities, among autistic individuals remain unclear. Among the entire Taiwanese population ( N = 29,253,529), between 2003 and 2017, 45,398 autistic individuals were identified and 1:4 matched to 181...

Background: Evidence has shown a rapid antidepressant and antisuicidal effects of low-dose ketamine infusion among patients with treatment-resistant depression (TRD) and prominent suicidal ideation (SI). The dorsolateral prefrontal cortex (DLPFC) plays a crucial role in the TRD pathomechanisms. Objective: Whether the structural and functional ch...

Background: People with autism spectrum disorder (ASD) may have poor oral health status because they often experience challenges with daily oral hygiene and have inadequate access to oral health care services. This study explored periodontitis risk in adolescents with ASD compared with those who did not have a diagnosis of ASD. Methods: Data fro...

Background: US studies suggest a positive association between attention deficit-hyperactivity disorder (ADHD) and the risk of exposure to prescription opioids. However, whether this association holds in Asian countries remains unclear. Methods: In total, 91,518 children and adolescents with ADHD and 91,518 age- and sex-matched controls were enro...

Background: Bipolar disorder is a mood dysregulation characterized by recurrent symptoms and episodes of mania, hypomania, depression, and mixed mood. The complexity of treating patients with bipolar disorder prompted the Taiwanese Society of Biological Psychiatry and Neuropsychopharmacology (TSBPN) to publish the first Taiwan consensus on pharmac...

Background: Pharmacotherapy of insomnia is prescribed often but may be complicated by drug dependence. Cognitive-behavioral therapy for insomnia is effective, but requires time to take effect. Repetitive transcranial magnetic stimulation (rTMS) is effective for depression but of uncertain benefit for insomnia. We studied low-frequency rTMS of the...

Background: Evidence suggests that inflammatory bowel disease is related to an increased risk of depressive disorder and suicide. Objectives: However, whether inflammatory bowel disease is an independent risk factor for suicide remains unclear. Design: A matched cohort study design. Settings: Taiwan National Health Insurance Research Databas...

Background: The benefits of low-dose ketamine for patients with treatment-resistant depression (TRD) and prominent suicidal ideation require further investigation. The effects of treatment refractoriness, the duration of the current depressive episode, and the number of prior antidepressant failures on ketamine efficacy also require clarification....

Background: Whether cortical excitation and inhibition functions differ between patients with treatment-resistant depression (TRD) and strong suicidal ideation (SI) and healthy subjects and whether 0.5 mg/kg ketamine infusion can modulate cortical excitation and inhibition functions among patients with TRD-SI remain unclear. Methods: A total of...

Objectives: Mounting evidence indicates the associations of temporomandibular disorders (TMD) with depression and anxiety symptoms. However, the temporal and casual relationships between TMD and depression and between TMD and anxiety must be further clarified. Methods: This study is a retrospective cohort analysis that employed data from the Tai...

Previous studies have presented evidence on the association between sleep apnea and suicidal ideation and planning, but the relationship between a clinical diagnosis of sleep apnea and suicide attempts remains unknown. We investigated the risk of suicide after a diagnosis with sleep apnea using data from a nationwide community-based population data...

Background: The mental health of children and adolescents with autism spectrum disorder (ASD) is a concern of recent years. However, a large-scale longitudinal study investigating the risk and the time course of subsequent psychiatric comorbidities is still lacking. Methods: Using the Taiwan National Health Insurance Research Database, 13,382 ch...

Background: Evidence has suggested that emotional dysregulation is a transdiagnostic feature in schizophrenia and major affective disorders. However, the relationship between emotional dysregulation and appetite hormone disturbance remains unknown in nonobese adolescents with first-episode schizophrenia, bipolar disorder, and major depressive diso...

Background and objective: Ketamine may work as an anti-inflammatory agent, and it increases the levels of vascular endothelial growth factor (VEGF) in patients with treatment-resistant depression. However, whether genes related to pro-inflammatory and anti-inflammatory cytokines and VEGF may predict the treatment response to ketamine remains unkno...

Background: To investigate the association between exposure to antidepressants (ADs) and the risk of epilepsy among patients exposed to ADs. Method: We conducted a case-control study using Taiwan's National Health Insurance Research Database between 1998 and 2013. A total of 863 patients with epilepsy and 3,452 controls were included. The dose o...

Background: Higher levels of neurofilament light chain (NfL) and proinflammatory cytokines (i.e., tumor necrosis factor [TNF]-α) were observed in patients with bipolar disorder (BD) and major depressive disorder (MDD). Procollagen type 1 N-terminal propeptide (P1NP), a bone turnover biomarker, is related to MDD. The association among the brain-bon...

Background: Whether response to antidepressants is related to the risk of developing type 2 diabetes mellitus (T2DM) in adolescents with depression remains unknown. Methods: This study used the Taiwan National Health Insurance Research Database to enroll 1739 adolescents with antidepressant-resistant depression, 6956 with antidepressant-responsi...

PURPOSE Evidence suggests an increased long-term risk of major psychiatric disorders (MPDs) in childhood and adolescent cancer survivors (CACSs). However, definitive conclusions regarding such associations and whether such associations vary for different types of cancers remain unclear. METHODS Using a nationwide data set from 2001 to 2011, we enr...

Aims: This study aimed to examine the risk of T1D, major depressive disorder (MDD), attention-deficiency hyperactivity disorder (ADHD), and autism spectrum disorder (ASD), in first-degree relatives (FDRs) of patients with T1D. Methods: We enrolled 24,555 FDRs of individuals with T1D and 1:4 matched controls (N = 98,220) based on age and sex usin...

Background The genetic load for major depressive disorder (MDD) may be higher in people who develop MDD earlier in life. This study aimed to investigate whether the parents of adolescents with MDD were more likely to have MDD, bipolar disorder (BD), schizophrenic disorder (SZ), alcohol use disorder, or substance use disorder than the parents of ado...

Dysfunction in circulating endothelial progenitor cells (cEPCs) plays a crucial role in cardiovascular disorders (CVDs). Patients with bipolar disorder (BPD) are at increased risk of developing CVDs. This study examined the associations of the functional properties of cEPCs with BPD and its clinical and cognitive characteristics. We recruited 69 pa...

The dorsomedial prefrontal cortex (DMPFC) plays a pivotal role in depression and anxiosomatic symptom modulation. However, DMPFC stimulation using a double-cone coil has demonstrated inconsistent results for antidepressant efficacy. No study thus far has investigated the antidepressant and anti-anxiosomatic effects of prolonged intermittent theta-b...

It remains unclear how major psychiatric comorbidities and parental psychiatric disorders differ in males and females with autism spectrum disorder (ASD). Between 2001 and 2011, 17,627 children and 5071 adolescents with ASD (ICD-9-CM code: 299) were identified from Taiwan’s National Health Insurance Research Database and assessed for major psychiat...

Background A significant proportion of patients with major depressive disorder (MDD) failed to respond to antidepressant medications. Repetitive transcranial magnetic stimulation (rTMS) is an effective option for treating such treatment-resistant patients with MDD (TRD). Reliable clinical predictors for antidepressant responses to rTMS remain elusi...

Predictive neurobiological markers for prognosis are essential but underemphasized for patients with bipolar disorder (BD), a neuroprogressive disorder. Hence, we developed models for predicting symptom and functioning changes. Sixty-one patients with BD were recruited and assessed using the Young Mania Rating Scale (YMRS), Montgomery–Åsberg Depres...

Introduction: Evidence has suggested an association between bacterial infection and increased risk of subsequent major mental disorders (MMDs). Whether such association varies with different pathogens remains unclear. We aimed to investigate the risk of subsequent MMDs after exposure to bacterial pathogens in children and adolescents. Methods: B...

Whether a history of premenstrual dysphoric disorder (PMDD) is associated with a subsequent risk of major affective disorders remains unclear. This study aimed to examine the risk of unipolar depression and bipolar disorder in women with PMDD compared with those without PMDD. This study used data from the Taiwan National Health Insurance Research D...

Background: Due to a relative dearth of longitudinal studies, the directionality of the relationship between mood and inflammation among patients with bipolar disorder (BD) is still unclear. We aimed to investigate the longitudinal associations of pro-inflammatory markers with mood symptom severity in BD. Methods: 132 adult patients with BD were...

Background: Previous research suggests that individuals with post-traumatic stress disorder (PTSD) have higher risk of chronic pain symptoms. It remains unknown whether risk of chronic pain symptoms occurs in the offspring of parents with PTSD. This study aimed to explore the risk of chronic pain conditions and depression in the offspring of parent...

Purpose Individuals with bipolar disorder (BD) may have an increased risk of exposure to prescription opioids. However, it is still unknown whether such risk also occurs in their offspring. This study aimed to investigate the risk of exposure to prescription opioid use and related medical conditions in the offspring of parents with BD. Methods Thi...

Studies have suggested that unaffected siblings of patients with autism spectrum disorder (ASD) have some other neurodevelopmental abnormalities. However, the risks of mental and developmental disorders have rarely been investigated among unaffected siblings. Using Taiwan’s National Health Insurance Research Database, 1304 unaffected siblings born...

Aims: Previous studies have suggested an increased risk of developing schizophrenia later in life in children with ASD. This study aims to investigate the diagnosis stability and the potential predictors for progression to schizophrenia in autism spectrum disorder (ASD). Methods: We recruited 11,170 adolescents (10-19 years) and young adults (20...

Objective: This study explored the bidirectional relationship between fibromyalgia and migraine among probands with either of the two disorders and their unaffected siblings. Background: Evidence suggests a bidirectional association between fibromyalgia and migraine in individuals and in twins. However, whether a bidirectional association betwee...

Whether children and adolescents with autism spectrum disorder (ASD) are more likely to be exposed to prescription opioids than others remains unknown. The Taiwan National Health Insurance Research Database was employed, and 14,849 children and adolescents with ASD and 148,490 age‐ and sex‐matched non‐ASD controls were enrolled between 2001 and 200...

Objective: Several small-scale studies have suggested a biological link between obsessive-compulsive disorder (OCD) and Parkinson's disease (PD). However, the temporal association of OCD and subsequent PD remained unclear. Methods: Here, we used Taiwan National Health Insurance Research Database and included the data of 28,722 patients with OCD...

Accumulating evidence suggests the critical role of cortical thinning in the pathophysiology of major depressive disorder. However, the association of cortical thickness and cognitive impairment with treatment-resistant depression (TRD) has rarely been investigated. In total, 48 adult patients with TRD and 48 healthy controls were recruited and adm...

Objective Few studies have investigated the parental risk of major psychiatric disorders among patients with comorbid autism spectrum disorder and attention deficit hyperactivity disorder. This study examined the differences in such risk among patients with autism spectrum disorder–only, with attention deficit hyperactivity disorder–only and both c...

Background Bacterial pneumonia is associated with an increased risk of dementia. However, the association between different pathogens of bacterial pneumonia and the risk of dementia remains unclear. Methods Using the Taiwan National Health Insurance Research Database, we recruited 11,712 patients with bacterial pneumonia and 11,120 controls betwee...

Background This posthoc analysis compared the antidepressant and antisuicidal effects of low-dose ketamine infusion with those of repetitive transcranial magnetic stimulation (rTMS) on treatment-resistant depression (TRD). Methods In the ketamine infusion trial, 48 patients with TRD were randomized to receive a single infusion of 0.5 mg/kg ketamin...

Teenage pregnancy is a major public health concern. However, few studies have investigated the relationship between pediatric bipolar disorder and early pregnancy, and whether bipolar disorder medications reduce the risk of early pregnancy remains unknown. In total, 3218 adolescent girls with bipolar disorder and 32,180 controls matched for age, fa...

Background: Emotional dysregulation (ED) is a common characteristic of both attention deficit hyperactivity disorder (ADHD) and major depressive disorder (MDD), especially in adolescents. However, whether ADHD and MDD may share the specific ED-related neural networks remains unknown. Methods: In total, 43 adolescents with clinical ED (22 adolesc...

Background Genetic factors link psychiatric disorders, particularly major depressive disorder (MDD), bipolar disorder, and obsessive-compulsive disorder (OCD), with systemic lupus erythematosus (SLE). Additionally, maternal SLE is a risk factor for long-term developmental problems, particularly learning disabilities, attention disorders, autism spe...

Background: Subcortical volumetric abnormalities in schizophrenia, bipolar disorder and major depressive disorder (MDD) have been consistently found on a single-diagnosis basis in previous studies. However, whether such volumetric abnormalities are specific to a particular disorder or shared by other disorders remains unclear. Methods: We analyz...

Aim: Bipolar disorder and major depressive disorder (MDD) have been demonstrated to be associated with proinflammatory states and cognitive function deficits. We aimed to investigate the differences of cognitive function and proinflammatory cytokines between patients with bipolar I disorder (BDI), bipolar II disorder (BDII), and MDD. Methods: 37...

Objective: This study explored the risk of migraine in children, adolescents, and young adults with attention deficit hyperactivity disorder (ADHD) and its association with ADHD medications. Background: The prevalence of migraine peaks between the ages of 35 and 39 years. Recent studies have reported a positive association between ADHD and migra...

Background: Frontal asymmetry plays a major role in depression. However, patients with treatment-resistant depression (TRD) have widespread hypofrontality. We investigated whether patients with TRD have a characteristic frontal activation pattern in functional near-infrared spectroscopy (fNIRS) findings and how the frontal cortex responds to diffe...

Background Evidence has demonstrated associations of bipolar disorder (BD) with cognitive impairment, dysregulated proinflammatory cytokines, and appetite hormones. Aim To compare executive dysfunction, proinflammatory cytokines, and appetite hormones between patients with first-episode and multiple-episode BDs. Methods This cross-sectional study...

Objectives Patients with bipolar disorder (BPD) are at high risk of cardiovascular diseases (CVDs) that are attributed to endothelial dysfunction. Circulating endothelial progenitor cells (cEPCs) are proposed as indicators of endothelial dysfunction. This study examined the relationship of cEPC numbers with BPD diagnosis and its clinical symptoms i...

All severe mental disorders, namely schizophrenia, bipolar disorder, and major depression, are associated with dementia. However, a head-to-head comparison study of severe mental disorders and dementia risk is lacking. This study was a retrospective analysis from Taiwan National Health Insurance Database. In the current study, we included 14,137, 1...

Introduction: Approximately 30% of IBD patients develop depression. Conversely, several studies reported increased IBD risk among patients with depression. Such bidirectional relationship has not been reported within one representative cohort, nor investigated among patients' family members. These associations may further implicate the gut-brain a...

Evidence suggests a continuity between obsessive–compulsive disorder (OCD) and schizophrenia. However, the factors that may predict diagnostic progression from OCD to schizophrenia remain unclear. A total of 35,255 adolescents and adults with OCD (ICD-9-CM code: 300.3) were enrolled between 2001 and 2010 and followed up at the end of 2011 for the i...

Rheumatoid arthritis (RA) may share genomic risks with certain mental disorders. This study aimed at investigating associations between parental RA and risks of mental disorders in offspring. Using the National Health Insurance Research Database (2001–2010), we conducted a matched cohort study involving two parent–child cohorts (i.e., RA-parent–chi...

Background: The association of treatment resistance with physical and psychiatric comorbidities remains unclear in elderly patients with late-onset major depressive disorder (MDD). Methods: Participants were selected from the Taiwan National Health Insurance Research Database. We included patients aged ≥ 65 years with first-episode MDD (ICD-9-CM c...

Objective: Managing chronic conditions in individuals with severe mental illnesses is critical for amending health disparities in this vulnerable group. The study aimed to compare the management and outcomes of diabetes care under different care models in individuals with schizophrenia in Taiwan. Methods: A population-based retrospective cohort co...

Background and Aims Inflammatory bowel disease (IBD) is a chronic gastrointestinal inflammatory disorder with increasing global prevalence. The risk of IBD in patients with schizophrenia remains unclear. We aim to investigate the risk of new‐onset IBD in patients with schizophrenia compared with matched controls. Methods We conducted a retrospecti...

Aims: Individuals with substance use disorders (SUD) have higher risk of developing pain disorders. This study aimed to investigate the risk of major psychiatric disorders (MPD), SUD, and pain disorders among their offspring. Methods: This study used data from the Taiwan National Health Research Database. The case cohort included participants wh...

Objective: Studies have reported a biological link between obsessive-compulsive disorder (OCD) and systemic autoimmune disease (SAID). However, whether the unaffected siblings of patients with OCD or SAID are more likely to develop subsequent SAID or OCD later in life remains unclear. Methods: We examined the Taiwan National Health Insurance Res...

Background: The acute onset of insomnia following surgical operations has long been neglected, and long-term outcomes are not clear. Our aims were 1) to evaluate the risk of postoperative insomnia, 2) to identify which surgeries are related, and 3) to follow patients with postoperative insomnia for the development of major mental and physical diso...

Increasing evidence suggests that patients with bipolar disorder are more likely to develop malignant cancer than in the general population. However, the overall cancer risk in the unaffected siblings of such patients remains unknown. From the National Health Insurance Research Database of Taiwan, 25 356 patients with bipolar disorder, 25 356 age‐m...

Background : The temporal association between type 1 diabetes mellitus (T1DM) and major psychiatric disorders, including schizophrenia, major affective disorder, autism spectrum disorder (ASD), and attention-deficit hyperactivity disorder (ADHD), remains elusive. Methods : The specialized databases of catastrophic diseases and mental disorders and...

Aims Patients with brain diseases have been associated with several retinal abnormalities. This study aimed to assess the risk of retinal diseases in patients with bipolar disorder (BD). Methods This nationwide cohort of 73,271 patients with BD was enrolled between 2001 and 2009. To identify newly diagnosed retinal diseases, the patients were foll...

Background Support vector machines (SVMs) based on brain-wise functional connectivity (FC) have been widely adopted for single-subject prediction of patients with schizophrenia, but most of them had small sample size. This study aimed to evaluate the performance of SVMs based on a large single-site dataset and investigate the effects of demographic...