the influence of aluminum on some serum parameters related to bone metabolism has been investigated by daily administration of aluminum over different periods of time. daily administration of aluminum (1 mg/kg bw) for 20 or 50 days elevated serum phosphorous concentration by 16 percent and had no significant effect on serum calcium level. when aluminum was injected as a complex with citric acid...

We investigated the prevalence of hypertrophic cardiomyopathy (HC) and its association with mitral anular calcium (MAC) detected by Doppler echocardiography in 379 unselected elderly patients in a long-term health care facility. HC was present in 17 of 379 patients (4 percent). Of 17 patients with HC, ten (59 percent) had asymmetric septal hypertrophy, and seven (41 percent) had idiopathic hype...

We examine the completeness of death reporting in the Social Security Administration's Death Master File (DMF) through comparison with deaths by year and age group reported in official U.S. vital statistics. For most years since 1973, results suggest that the DMF includes 93 percent to 96 percent of deaths of individuals aged 65 or older. Although studies have shown that the National Center for...

The cytogenetic changes in the thyroid cells of 199 Fischer rats are reported here. Fifty -eight rats were maintained on a normal iodine diet and 141 rats were maintained on an iodinedeficient diet for 7-25 months. Rats were sacrificed in groups of two to ten at two-week to one-month intervals; their thyroid cells were grown in cell culture and prepared for chromosomal analyses. An average of 4...

parent, generally their mother. Divorce rates rose dramatically in the 1960s and 1970s and have remained high. At the same time, more individuals are waiting to older ages to marry, or are not marrying at all, thus increasing the period during which women are at risk of a nonmarital birth. By the late 1990s, 26 percent of white children, 41 percent of Hispanic children, and 69 percent of black ...

BACKGROUND The authors conducted a study to assess dentists' and primary care physicians' oral cancer knowledge, attitudes and practices in the Commonwealth of Massachusetts. METHODS The authors mailed a 38-item, pretested questionnaire to a stratified sample of dentists and primary care physicians in Massachusetts. The sample population included all general medicine, internal medicine and fa...

BACKGROUND Induction of labor is on the rise in the U.S., increasing from 9.5 percent in 1990 to 22.1 percent in 2004. Although, it is not entirely clear what proportion of these inductions are elective (i.e. without a medical indication), the overall rate of induction of labor is rising faster than the rate of pregnancy complications that would lead to a medically indicated induction. However,...

BACKGROUND The management of asthma attacks by general practitioners in 1992/93 was compared with 1991/92 in relation to recommended guidelines. METHODS The findings from a postal survey of 299 UK general practitioners who managed 2332 patients with an asthma attack in 1992/93 were compared with those from 218 practitioners who managed 1805 attacks in 1991/92. Management by a subgroup of prac...

OBJECTIVES The aim of this study was to assess the test performance and clinical effectiveness of photodynamic diagnosis (PDD) compared with white light cystoscopy (WLC) in people suspected of new or recurrent bladder cancer. METHODS A systematic review was conducted of randomized controlled trials (RCTs), nonrandomized comparative studies, or diagnostic cross-sectional studies comparing PDD ...

Pediatric dentistry has enjoyed growing popularity in recent years, yet there remains a need for leadership in academe, research, and public health. In November 2008, the first Maternal and Child Health Bureau-sponsored regional Leadership in Pediatric Dentistry convocation was held at the Columbia University College of Dental Medicine. Seventy-two pediatric dentistry trainees from thirteen pro...