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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