Age-related changes in intraocular pressure in a large Japanese population: a cross-sectional and longitudinal study.

Objective: To assess the influence of aging, blood pressure, and body mass index (BMI) on intraocular pressure (IOP) in a large Japanese population.

Design: Cross-sectional and longitudinal study.

Participants: The participants in this study were 69,643 Japanese men and women 20 to 79 years of age.

[The effects of aging on the relationship between changes in body weight, serum lipid levels, and blood pressure].

The effects of aging on the relationships between changes in body weight, serum lipid levels (total cholesterol, HDL-cholesterol, triglyceride, beta-lipoprotein), and blood pressure (systolic pressure, diastolic pressure) were studied. The subjects were 17,689 Japanese (aged 19 to 88 years) who had received annual examinations at health centers for two consecutive years. After the date were adjusted for sex, body mass index, and serum lipid levels at baseline, changes in serum lipid levels and blood pressure per kilogram change in body weight were estimated for 3 age groups (under 45, 45 to 64, and 65 or older).

Urinary incontinence in elderly inpatients in Japan: a comparison between general and geriatric hospitals.

This is the first multi-hospital epidemiological study to elucidate the prevalence and characteristics of urinary incontinence in elderly inpatients throughout Japan. Of the 2586 subjects to whom questionnaires were issued, 1563 (60.4%) (65 to 102 years old, 598 men, 965 women) were suitable for the study.

Two-point discrimination test of the skin as an index of sensory aging.

Although the two-point discrimination test of the skin is a simple test of the sensory nerve function, there have been few studies on age-related changes in the ability to discriminate between two points in a large noninstitutionalized population. In this study we attempted (1) to determine normal values on the two-point discrimination test by age and gender in a large population with a wide age span; (2) to describe age-related changes on the two-point discrimination test; and (3) to test the independence of this index from other indices measuring physiological aging by sensory functions, such as accommodation and hearing tests. The subjects were 2,036 men and women aged 10-87 years.