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Table 6 Multivariable logistic regression analysis of factors associated with polysubstance use in the past year among adolescent female sex workers (N = 310)

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

Factors

Polysubstance use

n/N (%)

Crude OR

(95% CI)

p-value

Adjusted ORa

(95% CI)

p-value

Education level

 Illiterate or primary school only

57/89(64)

1.0

 

1.0

 

 Middle school (Grade 7–9)

152/166(92)

6.10(2.90–12.83)

 

6.81(3.09–15.01)

< 0.001

 High school or higher (Grade 10–12)

50/55(91)

5.61(1.93–16.34)

< 0.001

4.26(1.39–13.00)

0.011

Average monthly income from sex work

 ≤ 360 EUR (low level)

67/95(71)

1.0

 

1.0

 

 > 360EUR (Middle to high level)

190/213(89)

3.45(1.83–6.52)

< 0.001

2.94(1.40–6.14)

0.004

Had any intimate male partner with illicit drug use

 No

201/251(80)

1.0

   

 Yes

58/59(98)

14.43(1.87–111.24)

< 0.001

  

Had sex without a condom while drunk (PM)

 No

169/213(79)

1.0

   

 Yes

90/97(93)

3.35(1.43–7.84)

0.003

  

Experienced sexual and gender-based violence (PY)

 No

147,192(77)

1.0

 

1.0

 

 Yes

112/118(95)

5.71(2.29–14.27)

< 0.001

5.74(2.19–15.05)

< 0.001

Inconsistent condom use with any male partners (PM)

 No

65/86(76)

1.0

   

 Yes

194/224(87)

2.09(1.11–3.93)

0.019

  

Unmet need for modern contraception

 No

157/200(79)

1.0

 

1.0

 

 Yes

102/110(93)

3.49(1.55–7.85)

0.001

3.47(1.44–8.40)

0.006

Received HIV testing (PY)

 Yes

109/140(78)

1.0

   

 No

150/169(89)

2.25(1.20–4.22)

0.009

  

Prior abortion

 No

134/174(77)

1.0

 

1.0

 

 Yes

125/136(92)

3.39(1.64–7.01)

< 0.001

2.95(1.31–6.64)

0.009

Any self-reported symptom of STIs (PY)

 No

75/105(72)

1.0

   

 Yes

184/205(90)

3.50(1.85–6.63)

< 0.001

  
  1. In the final logistic regression model: Pseudo R2 = 0.29; P < 0.001; Akaike information criterion =210.80
  2. CI confidence interval, OR odds ratio in the bivariate logistic regression model
  3. aAdjusted odds ratio in the final logistic regression model