Publications (2)1.39 Total impact
Article: Respondent-driven sampling to recruit in-country migrant workers in China: a methodological assessment.[show abstract] [hide abstract]
ABSTRACT: Respondent-driven Sampling (RDS) is a new form of chain-referral sampling, which is superior to random sampling and traditional non-probability sampling in hard-to-reach populations. We employed RDS to recruit internal migrant workers in Chengdu, Sichuan Province, China, and examined whether it could be successfully used in this population. 1,270 migrant workers were recruited into the study. Social demographic information, social network size, and geographic information about participants' residential locations were collected. RDSAT software and geographic information system (GIS) technology were used to examine whether RDS was successful. The results showed that the sample compositions converged to equilibrium very quickly. Sample representativeness testing results showed that females (t = 3.61, p < 0.001) and people aged 46 years old and above (t = 3.222, p < 0.001) were under-represented. GIS results showed that respondents were concentrated in the vicinity of the third road ring of Chengdu, especially in the areas of 3, 4 and 21, which were close to the investigation site. The results demonstrated that RDS is a robust sampling method in the study of migrant workers. Despite its potential utility, it is also important to recognize and mitigate potential limitations, such as geographic proximity.Scandinavian Journal of Public Health 09/2011; 40(1):92-101. · 1.39 Impact Factor
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ABSTRACT: To investigate the quality of life of heroin dependent patients with methadone maintenance therapy and its influencing factors. A total of 216 heroin dependent patients who were receiving methadone maintenance therapy in Zigong of Sichuan Province were surveyed with the WHOQOL-BREF. The patients had a score of 12.06 +/- 3.73 for total quality of life and wellbeing and a score of, 13.14 +/- 2.79, 12.17 +/- 3.38, 12.20 +/- 3.17, 11.94 +/- 3.31, for physical, psychological, social relationships, and environmental function respectively. Age, length of drug addiction, job status, family relationship, arrested in last three months, frequency of sex activity, taking tranquilizer, confidence of treatment, duration of treatment, ways of using drugs had an impact on quality of life (P<0.05). Age, length of drug addiction, job status, family relationships, frequency of sex activity, arrested last three months, taking tranquilizer, and confidence of treatment entered into the multiple regression model. It is vital to take measures to improve quality of life of the drug addicted patients according to their different individual and family status.Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition 06/2009; 40(3):539-43.