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Table 1 Demographic and MMT characteristics of MMT clients during the course of treatment

From: Predictors of continued HIV-risk behaviors among drug users in methadone maintenance therapy program in China—A prospective study

Characteristics Baseline 6-month follow-up 12-month follow-up
(n = 5305) (n = 3123) (n = 2061)
Age (years), mean (SD) 38.65(6.17) 38.63(6.15) 38.85(6.24)
Sex n (%)    
 Male 4916 (92.67) 2865(91.74) 1898(92.09)
 Female 389(7.33) 258(8.26) 163(7.91)
Employment status n (%)    
 Employed 3066(57.79) 1928(61.74) 1287(62.45)
 Unemployed 2239(42.21) 1195(38.26) 774(37.55)
Marriage status n (%)    
 Married 2449(46.16) 1445(46.26) 968(46.97)
 Unmarried 2856(53.84) 1698(53.74) 1093(53.03)
Education n (%)    
 Primary school 1038(19.57) 611(19.56) 406(19.70)
 Junior school 3335(62.87) 1923(61.58) 1241(60.21)
 Senior school or higher 932(17.57) 589(18.86) 414(20.19)
HIV n (%)    
 Positive 401(7.56) 206(6.60) 148(7.18)
 Negative 4904(92.44) 2917(93.40) 1913(92.82)
HCV n (%)    
 Positive 3909(78.38) 2427(79.73) 1626(80.34)
 Negative 1078(21.62) 617(20.27) 398(19.66)
Years of drug use before MMT mean (SD) 15.02(5.04) 15.22(5.06) 15.45(4.88)
Methadone dosage (mg/day) -- 51.11(22.05) 52.38(22.17)
mean (SD)
Treatment adherence (days) -- 183.00 267.00
mean (SD) (95.00 ~ 183.00) (152.00 ~ 336.00)
Longest duration of abstinence (months) median (IQR) -- 4.00 (2.00 ~ 6.00) 4.00(2.00 ~ 7.00)