Variables

Girls n (%)

Boys n (%)

Total

OR (CI)

P value

Number of sexual partners

1

214 (62.6)

116 (55.0)

330 (57.8)

1.39 (0.96 - 1.94)

0.10

≥2

128 (37.4)

95 (45.0)

223 (42.2)

Frequency of sex

Occasional

148 (44.1)

85 (40.3)

233

0.88 (0.62 - 1.25)

0.177

At least once monthly

194 (55.9)

126 (59.7)

320

1.13 (0.15 - 0.79)

0.334

Sexual orientation

Heterosexual

289 (84.5)

173 (82.0)

35 (6.3)

1.57 (0.79 - 3.13)

0.787

Homosexual

18 (5.3)

17 (8.1)

462 (83.6)

0.83 (0.52 - 1.31)

0.970

Bisexual

35 (10.2)

21 (10.0)

56 (10.1)

0.96 (0.54 - 1.71)

0.973

Type of sex

Vaginal

241 (70.5)

124 (58.8)

365 (66.0)

0.59 (0.41 - 0.85)

0.834

Anal

8 (2.3)

6 (2.8)

14 (2.5)

1.22 (0.41 - 3.57)

1.216

Vaginal and anal

13 (3.8)

16 (7.6)

29 (5.2)

2.07 (0.97 - 4.40)

1.995

Vaginal and oral

80 (23.4)

65 (30.8)

145 (26.2)

1.45 (0.92 - 2.14)

1.317

Anal and oral

0 (0.0)

0 (0.0)

0 (0.0)

--

-

Use of condoms

Always

95 (27.8)

72 (34.1)

167

1.56 (1.04 - 2.33)

<0.001

Sometimes or never

247 (72.2)

139 (65.9)

386

0.64 (0.42 - 0.95)

<0.001