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Table 1 The characteristics of the national methadone clients in Southwest China

From: Geographical variations in risk factors associated with HIV infection among drug users in a prefecture in Southwest China

Study variable Number of clients examined Infection prevalence (%) χ 2 P
Drug use behaviors     
 History of intravenous drug use     
  Yes 2963 35.7 328.6 <0.001
  No 3491 16.1   
 History of sharing syringes     
  Yes 1166 49.1 433.6 <0.001
  No 5292 19.8   
 History of drug rehabilitation     
  Yes 2891 25.4 0.2 0.649
  No 3567 24.9   
Demographic factors     
 Gender     
  Males 5537 26.4 36.2 <0.001
  Females 921 17.2   
 Age     
   < 30 2877 27.5 34.3 <0.001
  30-39 2754 24.6   
  40-49 738 20.2   
   ≥ 50 89 6.7   
 Marital status     
  Single 1297 22.4 10.4 0.016
  Married 4889 25.7   
  Divorced 204 23.5   
  Widowed 68 35.3   
 Ethnicity     
  Yi 5355 28.4 184.7 <0.001
  Han 1055 8.6   
  Other 48 18.8   
Socioeconomic factors     
 Employment     
  Farming, 5151 28.5 161.2 <0.001
  Service-sector, 194 7.2   
  Unemployed 858 12.8   
  Other 255 11.0   
 Educational attainment     
  No schooling 1586 37.3 308.1 <0.001
  Primary school 2885 27.2   
  Junior high school 1402 13.4   
  Senior high school or above 585 9.7