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

No abstract available.
Population Characteristics*

No abstract available.
Population Characteristics*

No abstract available.
Population Characteristics

A cross-sectional study of the supply and use of water was carried out on 8180 households in 3 districts of Quang Binh province and Thua Thien Hue province. The results showed that: two water sources with high rate of usage were deep well (59.3%) and drilled well (19.2%). The rate of households with adequate water supply was 81.5%, among which deep wells were at highest rate of 48.4%, and tap water were at lowest rate of 1.8%. 58.3% of households were found with water containers including: built tanks (49.3%), buckets (24.7%), earthenware vessels (25.3%). 84.6% of water containers were built far from breeding facilities. 95.4% of wells had high wall, 84.8% with surrounding yards but only 8.8% with covers. It is necessary to improve the quality of living water in public by supplying better water sources
Water Supply Family Characteristics

Based on the results of the household cross-sectional study on stunting and its risk fators during 2002-2003 in 32 communes of 8 regions in Viet Nam, authours focused on analyzing the relation between stunting and socio-economic factors at household level. The results of logistic regression showed that stunting was closely related to the height of mother, BMI of mother, birth intervals, and parent’s education level. Children who were sick in the first year of life were at higher risk with stunting (OR=2.5).There was also a strong relation between stunting and household’s living standards (stunting rates were 13,1%, 24,1%, 30.2%, 38.0% and 44.2% in the richest, the mid-upper, the middle, the low-mid and the poorest quintiles, respectively).
Risk fators ; Family Characteristics

Objective: Rapidly evaluate and determine food and nutrition security situation in 8 communes of 3 districts Dak Rong, Cam Lo and Hai Lang, Quang Tri province, to provide necessary information for full survey, propose interventions in order to improve household food and nutrition security situation. Method: cross-sectional, rapid appraisal. Results: rate of poor household is high (45.8%). Infrastructure system, especially agriculture, in Dak Rong is very poor. Pre-harvest rice shortage and hunger still occurs commonly among poor households in 3 districts, especially in Van Kieu/Pako households (rice shortage occurs 4-6 months/year in average), where the number of malnourished children CED mothers are very high
Food ; Family Characteristics ; Epidemiology

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

The most informed members from 907 households were interviewed in regard to the hospital bursar. Results show that the majority of population (in which 7.5% with high income, 70.1%-mean and 22.4% - low income) is capable to pay the bursar by various resources including the available fund 65.2%, the sale of domestic animals and commodities 6.3% and the debt 27.2%. For all population, hospital fee is acceptable but on which the awareness is insufficient. Recommendations were made concerning the exemption for the subjects with low-income.
Hospitals ; Family Characteristics