Gary Greenberg

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Blood pressure measurements recorded during the medical Research Council's treatment trial for mild hypertension have been analysed according to the calendar month in which the readings were made. For each age, sex, and treatment group systolic and diastolic pressures were higher in winter than in summer. The seasonal variation in blood pressure was greater(More)
Data available in the United Kingdom through the Medical Research Council's General Practice Research Framework were recorded in a study of 603 women aged 45-69 with confirmed diagnoses of stroke or myocardial infarction, each matched by age with two controls. Current cigarette smoking and a family history of myocardial infarction were both strongly(More)
The Medical Research Council's treatment trial for mild hypertension was designed to determine the effects of blood pressure reduction on cardiovascular morbidity and mortality rather than to compare the separate effects of thiazides and beta-adrenergic blocking agents. However, the simultaneous use of both active treatments was discouraged and comparisons(More)
BACKGROUND We wanted to determine the frequency of self-reported receipt of screening mammography and Papanicolaou (Pap) tests in older women and investigate important predictors of utilization, based on 2 national longitudinal surveys. METHODS This cohort study includes participants from 4 waves (1994-2000) of the Health and Retirement Study (HRS)--5,942(More)
To help primary care residency programs develop or improve residency curricula in occupational and environmental medicine, the National Institute for Occupational Safety and Health launched a train-the-trainer initiative. This project was called EPOCH-Envi (Educating Physicians in OCcupational Health and the Environment). From 1990 to 1996, 46 2-day(More)
OBJECTIVE To determine if air conditioning might mitigate summer reductions in semen quality. DESIGN Prospective study of semen quality in summer and winter. SETTING Normal human volunteers were studied in the setting of a fertility laboratory. PATIENTS, PARTICIPANTS Two groups of volunteers were selected from the vicinity of New Orleans: 64 men who(More)
Urinary concentrations of toxic substances require correction to adjust for the misleading effects of varying states of hydration. The most common method in current use involves calculation of substance-to-creatinine concentration ratios. For accuracy, this method assumes creatinine excretion rates to be stable despite varying rates of urinary flow.(More)
The antihypertensive efficacy of propranolol in the treatment of mild hypertension was significantly impaired in cigarette smokers, whereas that of bendrofluazide was not affected by smoking habit. This diminished efficacy of propranolol in smokers may be one of several possible factors operating to reduce its primary preventive action against strokes, and(More)
Progestogens probably have metabolic effects that may contribute to the increased risk of cardiovascular reactions associated with combined oestrogen-progestogen oral contraceptives. This possibility was investigated by a study of nearly 2000 reports to the Committee on Safety of Medicines from 1964 to 1977. The reports concerned preparations in which(More)