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At least 883 records · Page 49Linked to original sources
PubMed1990

Fertility prognosis for infertile men: results of follow-up study of semen analysis in infertile men from two different populations evaluated by the Cox regression model.

Using the Cox proportional hazard regression model on one material (group I = 765, 1950 to 1951) we have identified four variables of semen analysis with significant prognostic information about fertility. The four variables were combined into a model for establishing the probability of the individual male to achieve pregnancy as a function of time. This model is tested first on another material (group II = 321, 1977 to 1985). A Goodness-of-fit test indicates excellent agreement between the expectations from the model and the observed number of pregnancies in group II. Second, the two groups are pooled (= 1,086). Then only three variables give significant prognostic information about the time until pregnancy: (1) the man's age at semen analysis (years); (2) the percentage of morphologically normal spermatozoa (ln %); and (3) the degree of motility (good/poor). These three important variables enter into a new and better prognostic model.

Female↗
PubMed2005

The obesity epidemic in young men is not confined to low social classes--a time series of 18-year-old German men at medical examination for military service with different educational attainment.

OBJECTIVE: Obesity prevalence is increasing worldwide and obesity is associated with low education. To assess if the overall increase of obesity prevalence is due to increasing obesity prevalence among low educated strata only. DESIGN: Data on n=1,883,783 males in their 19th year of life seen at physical examinations due to general conscription in Germany from 1989 to 1998. MEASUREMENTS: Stature and weight were measured in underpants and obesity defined as body mass index > 30 kg/m(2). RESULTS: From 1989 to 1998 an increase of body mass index values >70th percentile was observed. Overall obesity prevalence increased from 3.4% (95% CI 3.3-3.5) to 5.7% (95% CI 5.6-5.8). During the whole observation period, the prevalence of obesity was inversely related to educational level. The increase of obesity prevalence, however, was unrelated to educational level: for education less than 10 y from 4.9% (95% CI 4.7-5.0) to 7.7% (95% CI 7.5-7.9), for education of 10 y from 2.6% (95% CI 2.5-2.7) to 5.3% (95% CI 5.1-5.5) and for education of more than 10 y from 1.6% (95% CI 1.4-1.8) to 3.4% (95%CI 3.2-3.5). CONCLUSION: Prevalence of obesity increased among recruits of all educational levels, suggesting that preventive measures against obesity have to target all educational levels.

Adult↗
PubMed2002

HIV antibody testing among male commercial sex networkers, men who have sex with men and the lower-risk male general population in Hong Kong.

The present study examined the prevalence and factors that were associated with HIV testing behaviour among the MSM population, the male clients of female sex workers (FSW) population and the lower-risk male population in Hong Kong. Results revealed that out of the 2,074 male respondents surveyed, 7.3% indicated that they had been tested for HIV antibody in the past six months. The prevalence of HIV antibody testing among those who had ever had sex with the same sex (MSM) and those who had visited one or more female sex workers in the past six months was 15.5% and 16.1%, respectively. Private clinics were found to be the most popular venue for testing. Factors associated with HIV testing included whether the respondent had had sexual intercourse with FSWs in the past six months, MSM behaviour and number of female sex partners in the past six months. Possible reasons for the low prevalence of HIV antibody testing in Hong Kong and implications of the findings are discussed.

AIDS Serodiagnosis↗
PubMed2004

Technique and timing in women's and men's reverse one and one half somersault with two and one half twists (5335D) and men's reverse one and one half somersault with three and one half twists (5337D) 3 m springboard dives.

The purpose of this study was to compare timing and technique of males and females performing reverse twisting dives in elite international competition. Video data of the dives performed at the 1999 FINA World Diving Cup were captured and digitised to obtain times and postures of the divers at specific events including takeoff and entry. Estimates of flight height and mass-normalised work done on the springboard were obtained from flight times. The data indicated that many males are able to complete an additional twist rotation because they attain more height, and therefore more time in the air, than females.

Diving↗