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. 2006 Aug 10;82(5):354–358. doi: 10.1136/sti.2006.020693

Table 4 Sexual related behaviours among girls who have exchanged sex and girls who have never exchanged sex.

Exchanged (n = 160) % Never exchanged (n = 6686) % Unadjusted odds ratio*† (95% CI)
Number of times exchanged sex
 Median 1
 Mode 1
 Range 1–600
Ever had sexual (vaginal) intercourse 59.6 41.5 2.08 (1.37 to 3.17)
Mean age at first sexual (vaginal) intercourse‡ (SE) 14.9 (0.28) 15.4 (0.07) 0.83 (0.66 to 1.04)
Mean lifetime number of sex partners (SE) 4.2 (0.77) 1.6 (0.10) 1.10 (1.06 to 1.13)
Ever had anal intercourse 9.3 6.8 1.41 (0.80 to 2.48)
Any sexual activity with another female 7.9 2.2 3.83 (1.30 to 11.28)
Ever had romantic attraction to another female 17.2 8.0 2.40 (1.45 to 3.95)
Ever been physically forced to have sex 16.8 8.1 2.28 (1.35 to 3.83)
Ever been told by doctor or nurse that you have HIV or other STI 19.8 4.1 5.80 (3.06 to 10.99)

CI, confidence interval; SE, standard error.

*Except for the continuous variables, all correlates are dichotomous and the reference groups for odds ratios are the “0” or “no” categories.

†Odds ratios in which p<0.05 are shown in bold.

‡Among females who reported having ever had vaginal intercourse.