M R Griffin's research while affiliated with Vanderbilt University and other places

Publications (53)

Article
Aim To evaluate whether recent low adherence to metformin monotherapy is associated with hypoglycaemia after addition of a sulfonylurea. Methods We assembled a retrospective cohort of veterans who filled a new prescription for metformin between 2001 and 2011 and intensified treatment with a sulfonylurea after ≥1 year of metformin use. We calculate...
Article
Midodrine and fludrocortisone are considered the first-line pharmacologic treatments for orthostatic hypotension (OH). Although OH is thought to require long-term therapy, it is unknown how long patients remain on treatment ("persistence"). We assembled a retrospective cohort of patients with OH aged ≥50years enrolled in Tennessee Medicaid (1996-20...
Article
Serologic response to influenza vaccination declines with age. Few other host factors are known to be associated with serologic response. Our objective was to determine whether obesity and vulnerability independently predicted serologic response to influenza vaccination. Adults ≥ 50 years were recruited during the 2008-2009 influenza season. Subjec...
Article
Two important challenges are inherent in the design of studies using prescription data from electronic health records: how to define the minimum level of adherence that would qualify as "continuous drug use" and how to handle stockpiling of medications. Generally, the sensitivity of a study's conclusions to these design choices is not analyzed. In...
Article
Full-text available
Programmatic data from the United States on tuberculosis (TB) recurrence are limited. To determine the TB recurrence rate and to determine if chronic lung disease (CLD) and human immunodeficiency virus (HIV) infection are risk factors for recurrence in this population. Nested case-control study among TB cases reported to the Tennessee Department of...
Article
Full-text available
During the 2004-2005 influenza season two independent influenza surveillance systems operated simultaneously in three United States counties. The New Vaccine Surveillance Network (NVSN) prospectively enrolled children hospitalized for respiratory symptoms/fever and tested them using culture and RT-PCR. The Emerging Infections Program (EIP) and a si...
Article
Three recent nested case-control studies conducted in automated databases suggest that users of 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statins) have a risk of hip and other osteoporotic fractures half that of non-users of any lipid-lowering drug. However, this comparison may be biased by unmeasured factors associated with treat...
Article
Traditional nonsteroidal anti-inflammatory drugs (NSAIDs) increase the risk of clinically important upper gastrointestinal ulcers and bleeds about fourfold. Other risk factors for these events include advanced age, higher NSAID dose, prior ulcer or bleed, use of anticoagulants, use of corticosteroids, and poor general health. Among NSAID users with...
Article
Asthma causes serious morbidity in older people, but pharmacologic therapy in older people with asthma has never been studied, at least in part because of the difficulty of defining asthma in this population. To determine if older persons enrolled in Medicaid and hospitalized with an exacerbation of asthma receive appropriate outpatient asthma care...
Article
An increasing number of new and improved vaccines to prevent childhood diseases are being introduced. Combination vaccines represent one solution to the problem of increased numbers of injections during single clinic visits. This statement provides general guidance on the use of combination vaccines and related issues and questions. To minimize the...
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Full-text available
This study sought to quantify influenza-related serious morbidity in pregnant women, as measured by hospitalizations for or death from selected acute cardiopulmonary conditions during predefined influenza seasons. The study population included women aged 15-44 years who were enrolled in the Tennessee Medicaid program for at least 180 days between 1...
Article
Falls are a major health problem in nursing homes, but no interventions have been shown to prevent falls in nursing home residents. To evaluate an intervention program designed to prevent falls and associated injuries in high-risk nursing home residents. Randomized controlled trial. Seven pairs of middle Tennessee nursing homes with 1 facility in e...
Article
Our knowledge about the risk of hypoglycemia associated with diabetes treatment is derived from studies that often exclude frail, elderly persons. To determine the incidence and risk factors for developing serious hypoglycemia among older persons using sulfonylureas or insulin. We conducted a population-based, retrospective cohort study of 19932 Te...
Article
Angiotensin-converting enzyme (ACE) inhibitors are associated with an increased risk of angioedema, but the risk of recurrent angioedema if treatment is continued is not known. To test the hypothesis that the association between ACE inhibitor use and angioedema may not be recognized and to determine characteristics of angioedema associated with con...
Article
Pharmacotherapy should play an adjunctive role to nonpharmacologic measures in the overall management of patients with symptoms due to osteoarthritis. Patients should be instructed in how to rest or unload involved joints; protect them through appropriate manipulation of their environment and appropriate methods of lifting and bending; and maintain...
Article
Treatment of patients with OA of the knee should be individualized and tailored to the severity of the symptoms. In individuals with mild symptomatic OA, treatment may be limited to patient education, physical and occupational therapy and other nonpharmacologic modalities, and pharmacologic therapy including non-opioid oral and topical analgesics....
Article
To determine immunization coverage of infants receiving Medicaid in Tennessee and to identify risk factors for failure to complete recommended vaccinations by 24 months of age. Retrospective cohort study. A total of 33,615 children born in one of three urban Tennessee counties from 1980 through 1989 who were enrolled in Medicaid throughout their fi...
Article
We used a large computerized data base to study the relationship between exposure to nonsteroidal anti-inflammatory drugs (NSAIDs), anticoagulants, and corticosteroids and development of complications of peptic ulcer disease. In addition to contributing to the information on the etiology of ulcer disease, these studies offer some clues regarding th...
Article
To review the efficacy of nonmedicinal, noninvasive therapies in hip and knee osteoarthritis. Search of English-language literature from 1966 through 1993 using MEDLINE by cross-referencing "osteoarthritis" (therapy subheadings) with "controlled trial," "comparative study," or "trial(s)." Fifteen controlled trials of diathermy (deep heat), exercise...
Article
A history of peptic ulcer disease is frequently cited as a contraindication to the use of reserpine. However, the risk of ulcer disease associated with the use of reserpine at current therapeutic doses is unknown. To address this question, the authors conducted a nested case-control study of the association between reserpine use and hospitalization...
Article
Although joint use of nonsteroidal anti-inflammatory drugs (NSAIDs) and oral anticoagulants may increase the risk of gastrointestinal tract hemorrhage in elderly persons, no epidemiologic studies have been performed to quantify this risk. We performed a retrospective cohort study of Tennessee Medicaid enrollees aged 65 years or older from 1984 thro...
Article
In the United States, 20% or more of nursing home residents receive antipsychotic drugs, primarily for the behavioral manifestations of dementia. This high level of use of drugs with substantial toxicity has engendered a strong and persistent controversy and recently has led to explicit regulatory measures to curtail use (Omnibus Budget Reconciliat...
Article
To estimate the relative risk for peptic ulcer disease that is associated with the use of oral corticosteroids. A nested case-control study. Tennessee Medicaid program. The case patients (n = 1415) were hospitalized between 1984 and 1986 for gastric or duodenal ulcer or for upper gastrointestinal hemorrhage of unknown cause. The controls (n = 7063)...
Article
To determine whether cyclic antidepressants increase the risk of hip fracture, we conducted a population-based case-control study in the Canadian province of Saskatchewan. We identified 4501 persons 65 years of age or older with a first hospitalization for hip fracture between 1977 and 1985 and 24,041 comparable controls. Current antidepressant use...
Article
To evaluate the relative risk for peptic ulcer disease that is associated with the use of nonaspirin nonsteroidal anti-inflammatory drugs. Nested case-control study. Tennessee Medicaid program. Medicaid enrollees 65 years of age or older were included in the study. The 1415 case patients had been hospitalized for confirmed peptic ulcer disease at s...
Article
To investigate the effects of a 1985 Tennessee Medicaid regulatory change that expanded eligibility coverage specifically for married women during pregnancy, we studied vital statistics files linked to Medicaid enrollment files. The greatest Medicaid coverage increase in terms of an absolute difference in rates and the number of women covered occur...
Article
Recent studies of patients with hip fractures from two hospitals have suggested that the marked reduction in length of stay that occurred following implementation of the Medicare prospective payment system (PPS) resulted in decreased quality of care for these patients. To assess whether this change influenced mortality, we studied patients with hip...
Article
In a recent effort to lower the US infant mortality rate, Congress has expanded the Medicaid coverage options that states may offer pregnant women. Careful evaluation of changes in perinatal outcome associated with this expanded coverage is needed. The linkage of Medicaid enrollment files of mothers and infants to birth, death, and fetal death cert...
Article
We evaluated the risks of seizures and other neurological events following diphtheria-tetanus-pertussis (DTP) immunization for 38,171 Tennessee Medicaid children who received 107,154 DTP immunizations in their first 3 years of life. There were 2 children with encephalitis; both had disease onset more than 2 weeks following DTP immunization. There w...
Article
To determine if the risk of hip fracture difference between persons receiving benzodiazepines with long (greater than or equal to 24 hours) or short (less than 24 hours) elimination half-lives, we conducted a nested case-control study among residents of the Canadian province of Saskatchewan who were 65 years of age and older. We identified 4501 cas...
Article
To assess whether long-term thiazide use is associated with a decreased risk of hip fracture, a nested case-control study was done in the Canadian province of Saskatchewan between 1984 and 1985 among residents who were 65 years of age or older and who were not receiving other drugs thought to affect bone mass. There were 905 hip fractures identifie...
Article
To determine the association between current non-aspirin nonsteroidal anti-inflammatory drug (NSAID) use and fatal peptic ulcers or upper gastrointestinal hemorrhage. Nested case control study using a linked Medicaid-death certificate database. Tennessee Medicaid enrollees aged 60 and greater from 1976 to 1984. One hundred twenty-two patients, "the...
Article
We examined perinatal factors in relation to the rise in incidence of infantile hypertrophic pyloric stenosis among children in Olmsted County, Minnesota, during the period from 1950 through 1984. Primogeniture was associated with male infants but not female infants; some factor related to primogeniture, such as breast-feeding, may be etiologically...
Article
Of 668 Rochester, Minnesota residents with colon or rectal cancer diagnosed from 1940 through 1979, 400 (60%) were operated on for cure and had a known disease stage. The influence of patient sex, age, and decade of diagnosis, disease stage, grade, site, and size, and the presence of obstruction or perforation were examined as prognostic factors fo...

Citations

... The mean age of participants was 59 years, and about 50.5% of patients were men. A total of 41 studies presented data on incident users [43,[48][49][50][51][52][54][55][56]62,[65][66][67]70,71,74,[83][84][85]97,101,[104][105][106][107]114,118,119,[123][124][125][126]128,129,133,150,153,154,161,165,167]. A total of 30 studies reported the number/proportion of adherent patients treated with biguanides [41,57,59,65,70,71,76,84,85,87,97,99,100,114,118,119,123,128,130,133,136,142,143,146,149,153,159,161,171,172], 23 with insulin secretagogues [41,43,52,59,65,66,70,71,76,84,97,99,123,128,133,136,142,146,149,159,165,171,172], 13 TZDs [41,59,65,66,70,71,84,123,133,142,143,149,159], 19 with DPP-4i [41,[50][51][52][65][66][67]84,99,101,121,123,125,126,137,142,143,149,159], 8 with SGLT-2i [43,[48][49][50]123,124,142,157], and 7 with α-glucosidase inhibitors [41,84,99,123,142,149,159]. ...
... BZRAs' sedating effects in the elderly, possibly causing falls and fractures. The initial landmark case-control study of the effects of BZRAs on hip fracture rates that started the modern field of pharmacoepidemiology is a case in point (7). That study compared BZRA recipients to nonrecipients without adequately controlling for the preexisting increased risk of fractures among BZRA recipients. ...
... Previous findings indicate the use of sedatives [15] and diuretics [39] to be risk factors for injurious falls. The use of short-acting benzodiazepines [40], psychotropic drugs [19,41], drugs causing hypotension [41], long-acting psychotropic drugs and sedatives [6] and a high number of prescribed medications is related to injurious falls requiring medical treatment, and the use of sedatives [42] is associated with falls leading to fractures. Prolonged use of thiazides diminishes the risk of fractures due to falls [43]. ...
... We used data on hospitalization for pneumonia from multiple sources. We obtained data for the pre-PCV relative to PCV7 eras from Simonsen et al. (24), Foote et al. (25), and Grijalva et al. (26), and for the PCV7 relative to PCV13 period from a 2005-2014 study (27) and Tong et al. (28). In addition, we used estimates of the difference in hospitalization incidences during the PCV7 period from Grijalva et al. (23). ...
... Eliminating the pain and problems involved in the need for multiple injections, considerably reducing the cost involved ( Table 1) cumulative exposure to preservatives and stabilizers like gelatin, 1 and maximizing the compliance with immunization schedules, combination vaccines are recommended by the American Academy of Pediatrics, American Academy of Family Physicians, and the Advisory Committee on Immunization practices. 2 But combination vaccines have one major drawback. While they do combine the positives of the individual vaccines, these combinations at times result in unexpected side effects. ...
... However, improvements in indoor air quality were very modest, and no reduction in ARI or pneumonia incidence was observed in the IHIP intervention group, although the assessment may have been limited by the small number of cases that occurred during follow-up [10]. In contrast, in a subset of children participating in the IHIP and the RESPIRA-Peru studies, we previously reported significantly lower influenza ARI rates in subjects in the intervention arm compared with the control arm of the IHIP study [33]. However, risk of influenza ARI was significantly lower in children in either arm of the IHIP trial compared with children from households that did not participate in IHIP. ...
... This hypocalciuric effect provides therapeutic opportunities, for instance, in idiopathic hypercalciuria and nephrolithiasis. Furthermore , long-term effects of thiazides include increased bone mineral density and decreased fracture risk (Ray et al. 1989). Mutations in the gene encoding NCC were shown to cause Gitelman's syndrome, a recessive disorder with a phenotype resembling chronic thiazide administration including hypocalciuria (Ellison 2000; Gitelman et al. 1966; Ray et al. 1989; Reilly and Ellison 2000; Simon et al. 1996). ...
... This is likely related to a combination of the effect of aging on autonomic function, the coexistence of systemic diseases that impair autonomic reflexes, and the presence of aggravating factors, such as volume depletion, deconditioning or polypharmacy. The average patient with OH is 70 years old, suffers from multiple comorbidities, and is taking 14 medications [11]. There is plenty of opportunity, therefore, for these aggravating factors to unmask OH in patients with marginal compensatory autonomic reflexes. ...
... Obesity has been considered a risk factor for various infections, with post-infection complications and increased mortality from serious infections [44]. Obesity has been shown to have deleterious effects on host immunity, mainly increasing the risk of infectious susceptibility and severity [45,46]. Furthermore, for the other comorbidities and addictions analyzed, no association was found between the percentage of anti-SARS-CoV-2 antibodies and the presence of reinfection. ...