The United Nation (UN) approved the success and offered the International population Prize for Vietnam in 1999. From 1993 to 1999, the birth rate reduced from 3% to 2,19% per year. The rate of couple used the contraceptive methods increased from 53,7 to 75,31%. The population growth rate of 1,8% reduced gradually and will be the distributed birth rate in 2005. However, there were many challenges. The population program will develop the major activities related with the development of social-economy, renovation of the population activities in the new situation and quality of population in Vietnam.
Population ; Population Control

No abstract available.
Population Characteristics*

Population is major cause that impacts on the environmental damage and degeneration currently and in the future. This paper analysed the situation of Vietnam's population including growth rate, distribution, migration, municipalization, and structure as age, sex, and marital status. In Vietnam, the population has been impacting the environmental degeneration and damage such as forest, sea, water, resource, air and light.
Population ; Environment

There were 6 million people in 1999 in the world. The Vietnam's population are increasingly every year. Vietnam population in 1992 was more 1,632,000 than in 1991. Vietnam population in 1996 was more 1,392,000 than in 1995. The reduction of population growth was an urgent problem. The Vietnam's population feature was different from this of other countries that population's structure was young but average life expectancy was high. The rate of old people were increasingly. There was an increase of 2 millions of old people every year.
Population ; Sociology

A study on 889 children ages of 6-15 in 8 schools in the urban of Hanoi and 367 childen ages of 6-15 of 2 schools in the suburb of Hanoi has shown that the rate of streptococcicosis A in the throat was 15.3%. There is no different of the rate of streptococcicosis. A between male and female and between pupils of primary school ages and pupils of secondary school. The children with upper respiratory tract infection were a higher risk of streptococcisis than others.
Streptococcus ; Population

A study on 2495 newly infected cancer cases in Thua Thien – Hue between 2001 and 2003 showed that males account for 54.9% and females account for 45.1%. The cancers of liver, stomach, lung, colon-rectum and leukemia were the leading cancers in males while the cancers of breast, stomach, cervix, lung and lymphoma were the leading cancers in females. The average annual incidence for both sexes was 76.1/100,000 habitants (in males was 80.9 per 100,000 habitants and in females was 67.6 per 100,000 habitants)
Neoplasms ; Population

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

No abstract available.
Population Characteristics