No abstract available.
Population Characteristics*

No abstract available.
Population Characteristics*

No abstract available.
Population Characteristics*

No abstract available.
Population Characteristics

It is interested in examining treatment effect on a particular category of subjects or in comparing treatment effects among different subgroups as well as overall treatment effect due to heterogeneity of study subjects. Subgroup analyses are exceedingly common, but they are also often misleading. Conclusions based on subgroup analyses can do harm both when a particular category of people is denied effective treatment (a "false-negative" conclusion), and when ineffective or even harmful treatment is given to a subgroup of people (a "false-positive" conclusion). Because of the frequency and the importance of clinical application of subgroup analysis, researchers need to be cautious about doing subgroup analyses. This study presents guidelines to help conducting subgroup analyses correctly.
Population Characteristics

There have been a few reports of familial anorectal malformations extending over more than one generation. We experienced a case of a family with 3 members spanning 2 generations affected with isolated low type anorectal malformations. They had same low type of anorectal malformations. In all 3 patients, a perianal anoplasty was performed.
Family Characteristics ; Humans

No abstract available.
Parturition* ; Seasons* ; Sex Characteristics*

The Mechanism for sorting out the covariance effect is known as the covariance analysis. The sorting out of regression and correlation effect is an obvious application of the covariance analysis. The result of Do population by age groups (15 age interval) from 1966 census and from, 1970 Census has been applied to analyzing covariabiltiy by the analysis of covariance. The results are as follows. The significance of the regression of 1970 population on 1966 population is assured as F=116.5. There is a significant difference between mean of each age groups(F=88.1). There is very little evidence of significant heterogeneity of regression between age group. (F=0.72).
Censuses ; Humans ; Population Characteristics

Congenital miosis is observed in 4 members of a family in two generations. One of them has a right miotic eye and a left normal eye. Others have bilateral miotic eyes.
Family Characteristics ; Humans ; Miosis*

The investigation using combination of quantitative and qualitative methods at 60 communes, towns of three districts including Quan Ba, Yen Minh (Ha Giang) and Chiem Hoa (Tuyen Quang) showed that ratio of households with hygienic privy were very low (6.5%) among 6012 investigated households in both provinces. The construction and preservation and use of the privy were not in good conditions, only 5.2% households are using hygienic privy. The situation in Ha Giang was not as good as Tuyen Quang
Family Characteristics ; Epidemiology