Table 2

Prevalence of sexual behavior by gender

Male % (95% CI)

Female % (95% CI)

Pd(χ 2)e


Ever had sexa

30.9(25.8–36.5)

9.7(6.5–14.0)

0.001 (51.53**)

Mean age at first sexual encounterb

17.4 (SE 0.20)

17.8 (SE 0.33)

0.362

Mean age of first partnerb

18.1 (SE 0.25)

21.4 (SE 0.58)

0.001

Used condom at first sexual encounterb

41.1 (31.9–51.1)

32.0 (18.7–49.0)

0.277 (1.21)

Had multiple sexual partnersb

65.0 (56.8–72.5)

32.0 (21.5–44.8)

0.001 (14.83**)

Had sex in the past 12 monthsb

71.3 (63.5–78.1)

75.1 (57.4–87.1)

0.688 (0.16)

Used a condom at last sexual encounterc

49.4 (38.2–60.6)

28.8 (12.1–54.2)

0.079 (3.23)

Always used a condomc

35.7 (25.6–47.4)

24.5 (10.1–48.4)

0.274 (1.23)


CI, confidence interval; SE, standard error.

a. Among total respondents (n = 575 for males and n = 566 for females).

b. Among people who had ever had sex (n = 183 for males and n = 55 for females).

c. Among people who had sex with noncommercial sex partners in the past 12 months (n = 123 for males and n = 40 for females).

d. Chi-square test for the percentage and t-test for the mean.

e. ** P < 0.01.

Nishimura et al. BMC International Health and Human Rights 2007 7:8   doi:10.1186/1472-698X-7-8

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