Table 3 Multivariable Extended Cox analysis of correlates of incident pregnancy among 204 Female and Entertainment Sex workers (799 observations), working in Phnom Penh, Cambodia enrolled in the YWHS-II study

 16–18

1.00 (0.02–4.31)

1.59 (0.36–7.11)

1.37 (0.31–6.00)

 19–24

2.28 (1.22–4.27)*

3.30 (1.57–6.96)^†

2.56 (1.35–4.87)^†

 25–29 years

REF

REF

REF

  ≤ 150

2.29 (0.96–5.44)*

2.63 (1.02–6.77)^†

–

  > 150

REF

REF

–

 No schooling

1.38 (0.40–4.70)

1.39 (0.38–5.12)

–

 1–6 years

2.43 (0.86–6.89)*

1.87 (0.64–5.50)

–

 7+ years

REF

REF

–

 Legally married

2.09 (0.49–8.99)

1.42 (0.28–7.07)

1.76 (0.40–7.66)

 Living together, not legally married

2.05 (1.09–3.84)^†

1.92 (0.23–15.9)

1.95 (1.03–4.71)^†

 Single, widowed, divorced or separated

REF

REF

REF

Number of previous children

0.76 (0.56–1.03) ^†

0.67 (0.38–1.17)

–

HIV positive

0.36 (0.11–1.16) ^†

0.47 (0.13–1.63)

–

Days drank alcohol, last month

0.77 (0.51–1.18)

–

–

ATS use, last 3 months (self-report)

0.79 (0.35–1.78)

–

–

Condom self-efficacy‡

0.92 (0.85–0.99)^†

0.89 (0.81–0.98)^†

0.92 (0.84–0.99)^†

Hormonal contraceptive use, last 3 months‡

5.63 (0.78–41.0)*

0.17 (0.02–1.27)

–

 Condom use, last sex (yes)

0.45(0.23–0.88)^†

0.57 (0.28–1.13)

–

 Condom use, last client (yes)

0.74 (0.09–5.81)

–

–

 Condom use, non-paying partner (yes)

0.53 (0.13–2.26)

–

–

 Number of sexual partners, last month

1.11 (0.51–2.41)

–

–

 Client physical or sexual violence, last year

1.88 (0.73–4.85)

–

–

 Intimate partner physical or sexual violence, last year

0.96 (0.23–3.98)

–

–

 Entertainment venue-based sex work, last month

0.67 (0.34–1.31)

–

–

 Non- entertainment venue-based sex work, last month

REF

–

–

 Had a manager

0.65 (0.35–1.21)

–

–