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Smoking and drinking habits as risk factors for hearing loss in the elderly: epidemiological study of subjects undergoing routine health checks in Aichi, Japan.

In order to determine the risk factors for hearing loss in the elderly, a total of 496 subjects with bilateral hearing loss and 2807 age-matched persons without hearing disturbance were recruited from the participants in an automated multiphasic health screening examination, and their lifestyle and medical data were analysed. Current smokers showed a significantly increased risk of hearing loss compared with non-smokers (odds ratio after adjustment for sex, age, and potential confounders=2.10 (1.53-2.89)), while heavy drinkers did not show an increased risk compared to non-drinkers. Our findings might provide some clues for the primary prevention of age-related hearing loss.

Aged↗

Multiphasic health profiles of Navy divers.

A multiphasic medical screening program was conducted on 197 qualified U.S. Navy divers. For this cross-sectional study each individual passed through several phases of examination: personal background and history, personal medical history, psychological testing, physical examination, anthropometry, audiometry, blood chemistry and hematology, pulmonary function tests, electrocardiography, roentgenography, and vision testing. The data are presented in a descriptive format. The results of most of the examinations were normal. However, decrements in auditory function were observed at low and high frequencies. Values for several pulmonary function tests were high in comparison to those reported in the general population. Obesity was prevalent as determined by clinical examination and anthropometric measurements. These findings suggest the feasibility of incorporating data from comprehensive periodic medical surveillance of occupational diving populations into longitudinal investigations of diver health.

Adult↗

The natural history of simple renal cysts.

PURPOSE: Although simple renal cysts are common in older patients, little is known concerning their natural history. We examined the natural history of renal cysts by investigating the prevalence and sequential changes in their size and number in individuals. MATERIALS AND METHODS: We collected data on 14,314 individuals who participated in a multiphasic health screening program at our institute in 1999. An ultrasound renal cyst prevalence survey was performed. As a longitudinal study, 45 patients with renal cysts were followed a mean of 6 years from January 1993 to December 1999. RESULTS: In the prevalence survey 1,700 individuals (11.9%) had at least 1 renal cyst on ultrasound. The ratio of men-to-women with cysts was 2:1. The prevalence of renal cysts increased more than 7-fold with age from 5.1% in the fourth to 36.1% in the eighth decade of life. Our longitudinal study revealed that the majority of cysts increased in size and number. The average increase in size and the rate of enlargement were 2.82 mm. and 6.3% yearly, respectively. Cysts in patients younger than 50 years grew more rapidly than those in patients 50 years old and older, at a rate of 3.94 and 1.84 mm. yearly, respectively (p = 0.010). Multiloculated cysts progressed more rapidly than simple cysts (6.93 versus 2.18 mm. yearly, p <0.0001). CONCLUSIONS: The prevalence of renal cysts increases with age and shows a remarkable difference in incidence by sex. Renal cysts progress in size and number, and appear to grow more rapidly in younger patients. The natural history of multiloculated cysts may be distinct from that of simple cysts and warrants further investigation.

Adolescent↗

A comparison of cause-specific mortality among participants and nonparticipants in a work-site medical surveillance program.

Nonparticipants in general population health surveys have been found to be less healthy than participants, but data on nonparticipants in work-site health surveys have been more scarce. We compared cause-specific mortality among 11,156 male employees of The Dow Chemical Company who participated in at least one work-site health examination between 1967 and 1978 with 6915 employees who did not participate. The nonparticipants experienced higher mortality rates for nearly every cause of death examined but particularly from smoking and alcohol-abuse related diseases. This was especially true during the first 5 years of follow-up, suggesting that some employees do not participate because they are already ill. These findings have important implications for the use of examination data for both primary and secondary disease prevention purposes, and these are discussed.

Adult↗