Table 3

Factors correlated with HIV prevalence in the two rounds of the biobehavioural survey of female sex workers in Iran

Variables2010 survey2015 survey
Crude analysisAdjusted analysisCrude analysisAdjusted analysis
Age group
 <25111
 ≥2514.63 (2.59 to +Inf)*‡10.94 (1.91 to +Inf)‡3.0 (0.28 to 32.1)
Highest educational level
 Illiterate111
 Primary or below0.38 (0.11 to 1.39)0.39 (0.14 to 1.05)0.27 (0.10 to 0.76)
 Middle school and above0.42 (0.10 to 1.70)0.26 (0.09 to 0.76)*0.22 (0.08 to 0.61)
Current marital status
 Married11
 Single/divorced/widowed0.90 (0.32 to 2.56)1.6 (0.72 to 3.65)
 Temporarily married (Sigheh)2.21 (0.72 to 6.78)2.2 (0.33 to 14.23)
Received free male condom in the last year
 No1111
 Yes2.54 (0.84 to 7.70)†2.37 (0.90 to 7.32)‡4.40 (0.76 to 25.2)†6.23 (1.11 to 34.9)
Frequency of male condom use with all sex partners in the last months
 Always111
 Occasionally1.48 (0.26 to 8.30)1.04 (0.38 to 2.83)0.60 (0.27 to 1.34)
 Never0.57 (0.08 to 4.03)2.02 (0.88 to 4.64)†1.17 (0.63 to 2.14)
Age at first sex debut
 <1511
 15–190.77 (0.13 to 5.41)‡0.74 (0.05 to 11.2)
 +201.38 (0.41 to 7.36)‡0.48 (0.04 to 5.31)
Number of clients in the last month
 0111
 1–50.54 (0.17 to 1.71)0.54 (0.10 to 1.90)‡1.52 (0.70 to 3.34)
 +60.42 (0.12 to 1.54)0.36 (0.09 to 1.12)‡0.25 (0.09 to 0.67)
Number of non-paying sex partner in the last month
 011
 +10.49 (0.16 to 1.51)0.97 (0.35 to 2.67)
Lifetime non-injection drug use
 No111
 Yes1.37 (0.55 to 3.39)3.02 (1.48 to 6.16)*2.33 (1.13 to 4.81)
Lifetime injection drug use
 No1111
 Yes3.58 (1.65 to 7.78)*2.99 (1.18 to 7.21)‡5.81 (2.39 to 14.1)*5.32 (2.31 to 12.3)
Type of recruitment
 Facility-based1
 From street-based venues1.42 (0.21 to 9.41)
  • *These variables had a p value less than 0.05 and entered into the multivariable model.

  • †These variables had a p value less than 0.20 and entered into the multivariable model.

  • ‡Exact logistic regression was used for data in 2010.