BACKGROUND Consistent and predictable seasonal fluctuations in hospitalizations have been demonstrated for diverse communicable and non-communicable health conditions. The objective of this study was to examine the seasonal patterns of all hospitalizations by age and gender in order to determine whether the hospital system for a large geographical area was subject to consistent, predictable tem...

Using the Canadian National Population Health Survey and the recent tax variation across Canadian provinces, this paper examines the impact of cigarette taxes on smoking participation. Consistent with the literature, we find evidence of a heterogeneous response to cigarette taxes among different groups of smokers. Contrary to most studies, we find that the middle age group-which constitutes the...

In general there is a slow decline in physical performance during maturity which becomes more rapid with increasing age. Maximum oxygen uptake ('Y02 max) is regarded as one of the best measurements of physical working capacity; and cross-sectional studies suggest that men lose about 11-14ml.kg-lmin-1 of aerobic power between the ages of 25 and 55 years (Astrand and Rodahl, 1977; Quirion et al, ...

background: previous studies have shown that interaural-time-difference (itd) training can improve localization ability. surprisingly little is, however, known about localization training vis-à-vis speech perception in noise based on interaural time difference in the envelope (itd env). we sought to investigate the reliability of an itd env-based training program in speech-in-noise perception a...

background: elderly patients (>75 years) have constituted the fastest growing portion of the coronary artery bypass grafting (cabg) patient population over the last two decades. of the goals that surgical care for the elderly pursues, cure may be an unfeasible one; nevertheless, palliation and comfort warrant sufficient importance. the present study sought to examine the postoperative course an...

objectives this study aims to detect the effect of selected aerobic exercises on sleep quality in non-athlete middle-aged women. materials and methods fifteen non-athlete middle-aged women participated in this study, all of them suffered from insomnia. pittsburgh questionnaire was used for determining sleep quality in this sample. four indices including sleep duration, sleep disturbance, sleep ...

OBJECTIVE To assess the effect of exercise on water turnover in endurance trained middle aged men. METHODS Water turnover was assessed using 2H2O as a tracer for water in six exercising and six sedentary middle aged men over seven consecutive days. The exercising subjects ran on average 14.8 km per day, while the sedentary group did not take part in any regular physical activity. RESULTS Th...

BACKGROUND AND AIMS The aim of the present study was to examine whether deeper processing of words during encoding in middle-aged adults leads to a smaller increase in word-learning performance and a smaller decrease in retrieval effort than in young adults. It was also assessed whether high education attenuates age-related differences in performance. METHODS Accuracy of recall and recognitio...

Previous genetic studies have suggested a history of sub-Saharan African gene flow into some West Eurasian populations after the initial dispersal out of Africa that occurred at least 45,000 years ago. However, there has been no accurate characterization of the proportion of mixture, or of its date. We analyze genome-wide polymorphism data from about 40 West Eurasian groups to show that almost ...

The aim was to determine whether the effects of age, period (from 1987 to 1997), or cohort (birth-cohort) are the most plausible explanations for the variation in dentist utilisation over time in Spain. On the basis of three sequential Spanish National Health Surveys, the trend in the percentage of people visiting the dentist within the previous 3 months was analysed by means of a standard coho...