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Table 1 Socio-demographic, sex work, behavioural and sexual health characteristics of adolescent female sex workers, stratified by alcohol use and tobacco use in the past year (N = 310)

From: Sexual and reproductive health correlates of polysubstance use among female adolescents who sell sex in the southwest of China

Characteristics All women
(N = 310)
n (%)
Abstain or occasional drinking (N = 53; 17%)
n (%)
Regular drinking
(N = 257; 83%)
n (%)
Abstain or occasional smoking
(N = 174; 56%)
n (%)
Regular smoking
(N = 136; 44%)
n (%)
Socio-demographic variables
 Age, median years (IQR) a 19(18–19) 19(18–19) 19(18–19) 19(18–19) 19(18–19)
 Education level    **   
  Illiterate or primary school only 89(29) 32(60) 57(22) 58(33) 31(23)
  Middle school (Grade 7–9) 166(54) 16(30) 150(58) 89(51) 77(57)
  High school or higher (Grade 10–12) 55(18) 5(10) 50(20) 27(16) 28(20)
Current marital status
 Never married or single 145(47) 22(42) 123(48) 89(51) 56(41)
 Married or cohabiting 165(53) 31(59) 134(52) 85(49) 80(59)
Place of birth
 local 53(17) 9(17) 44(17) 29(17) 24(18)
 Elsewhere 257(83) 44(83) 213(83) 145(83) 112(82)
Sex work variables
 Median weekly number of male clients (PM) (IQR) a 2(1–3) 2(1–3) 2(1–3) 2(1–3) 2(2–3) *
 Duration in sex work
  ≤ half year 191(62) 34(64) 157(61) 117(67) 74(54)
  > half year 119(38) 19(36) 100(39) 57 (33) 62(46)
Average monthly income from sex work 95(31)   **   
(past 3 months)cd 213(69) 30(57) 65(26)   **
  ≤360 EUR (low level)   23(43) 190(74) 66(38) 29(21)
  > 360EUR (Middle to high level)     106(62) 107(79)
Sexual behavioural variables
 Age at sex debut, median years (IQR) a 17(16–18) 16(15–18) 17(16–18) 16(16–18) 16(16–17) *
 Coerced for forced sex at sex debut 70(23) 16(31) 54(21) 34(20) 36(27)
 Median number of intimate male partner (PY) (IQR) a 1(1–2) 1(1–2) 1(1–2) 1(1–2) 1(1–2)
 Had any intimate male partner with illicit drug use 59(19) 1(2) 58(23)** 22(13) 37(27) **
 Had sex without a condom while drunk (PM) 97(31) 7(13) 90(35)* 39(22) 58(43) **
 Experienced sexual and gender-based violence (PY) 118(38) 6(11) 112(44)** 51(29) 67 (49) **
 Inconsistent condom use with any male partners (PM) 224(72) 31(59) 193(75)* 118(68) 106(78) *
 Unmet need for modern contraception 110(36) 9(17) 101(39) * 57(33) 53(39)
 Utilization of health service for any STIs treatmente      **
  Safe medical care 193(65) 35(71) 158(63) 120(73) 73(55)
  Unsafe medical care 105(35) 14(29) 91(37) 44(27) 61(45)
 Received HIV testing (PY)f 140(45) 33(64) 107(42)* 85(49) 55(40)
Sexual health variables
 Prior abortion 136(44) 12(23) 124(48)** 66(38) 70(52) *
 Any self-reported symptom of STIs (PY) 205(66) 22(42) 183(71)** 93(53) 112(82) **
Concurrent substance use
 Illicit drug use b 27(9) 1(2) 26(10)* 4(2) 23(17) **
 Regular-alcohol drinker 257(83) 122(70) 135(99) **
 Regular-tobacco smoker b 136(44) 1(2) 129(50) **
  1. p-value using Pearson’s Chi-squared tests, unless otherwise indicated: a Wilcoxon rank sum test, b Fisher’s exact test
  2. IQR interquartile range, PY past year, PM past month
  3. *p-value ≤0.05; ** p-value ≤0.001
  4. cAverage income was divided into three groups (low level, middle level and high level) according to local income level of general population in Kunming in 2012
  5. d Two responses were missing in the question of monthly income;e Twelve responses were missing in the question of STIs treatment;f One response was missing in the question of HIV testing