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Table 4 Multivariable logistic regression analysis of factors associated with regular-tobacco smoking behaviour 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 Regular-tobacco smoking
n/N (%) Crude OR
(95% CI)
p-value Adjusted ORa
(95% CI)
p-value
Duration in sex work
 ≤ half year 74/191(39) 1.0    
 > half year 62/119(52) 1.71(1.07–2.75) 0.021   
Average monthly income from sex work
 ≤ 360 EUR (low level) 29/95 (31) 1.0    
 > 360 EUR (Middle level to high level) 107/213(50) 3.81(2.02–7.19) < 0.001   
Age at sex debut
 18–19 years 25/82(31) 1.0    
 12–15 years 87/175(50) 2.25(1.28–3.97) 0.040   
 16–17 years 24/53(46)     
Had any intimate male partner with illicit drug use
 No 99/251(39) 1.0    
 Yes 37/59(63) 2.58(1.42–4.69) 0.001   
Had sex without a condom while drunk (PM)
 No 78/213(37) 1.0   1.0  
 Yes 58/97(60) 2.57(1.55–4.27) < 0.001 1.81(1.04–3.15) 0.035
Experienced sexual and gender-based violence (PY)
 No 69/192(36) 1.0    
 Yes 67/118(57) 6.05(2.42–15.11) < 0.001   
Inconsistent condom use with any male partners (PM)
 No 30/86(35) 1.0    
 Yes 106/224(47) 1.68(1.00–2.82) 0.049   
Utilization of health service for any STIs treatment!!
 Safe medical care 73/193(38) 1.0    
 Unsafe medical care 61/105(58) 2.28(1.39–3.74) < 0.001   
Prior abortion
 No 66/174 (38) 1.0    
 Yes 70/136(51) 1.73(1.09–2.75) 0.017   
Any self-reported symptom of STIs (PY)
 No 24/105(23) 1.0   1.0  
 Yes 112/205(55) 4.06(2.32–7.11) < 0.001 2.79(1.55–5.01) 0.001
Illicit drug use
 No 113/283(40) 1.0   1.0  
 Yes 23/27(85) 8.65(2.80–26.72) < 0.001 6.84(2.00–23.36) 0.002
Alcohol use
 Abstainer occasional drinking 1/53(2) 1.0   1.0  
 Regular drinking 135/257(53) 57.54(6.62–500.48) < 0.001 40.35(5.43–299.76) < 0.001
  1. In the final logistic regression model: Pseudo R2 = 0.23; P < 0.001; Akaike information criterion =339.33
  2. CI confidence interval, OR odds ratio in the bivariate logistic regression model
  3. aAdjusted odds ratio in the final logistic regression model
  4. !!Twelve responses were missing in the question of STI treatment