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Table 2 Behaviours of sexually active students (n = 2059)

From: Prevalence of Chlamydia trachomatis and Neisseria gonorrhoeae infection in adolescents in Northern Italy: an observational school-based study

Behavioural risk factors

Males (%) n = 1112

Females (%) n = 1606

Total (%) n = 2718

Ever had sexual intercourses

   

 No

350 (31.5)

309 (19.2)

659 (24.2)

 Yes

762 (68.5)

1297 (80.8)

2059 (75.8)

Age at sexual debuta

   

 Mean (SD)

16.3 (1.4)

16.0 (1.4)

16.1 (1.4)

Number of sexual partners during lifetimea

   

 1

319 (42.0)

565 (43.7)

884 (43.1)

 2 or more

440 (58.0)

728 (56.3)

1168 (56.9)

Number of sexual partners during the 6 months before the surveya

   

 0

136 (18.0)

107 (8.3)

243 (11.8)

 1

489 (64.6)

1002 (77.4)

1491 (72.7)

 2 or more

132 (17.4)

185 (14.3)

317 (15.5)

Had used condom during last sexual intercourseb

   

 No

298 (47.5)

738 (61.9)

1036 (57.0)

 Yes

329 (52.5)

454 (38.1)

783 (43.0)

Use of condom in sexual intercourses during the 6 months before the surveyb

   

 Always

206 (33.8)

280 (24.2)

486 (27.5)

 Sometimes/seldom/never

404 (66.2)

875 (75.8)

1279 (72.5)

Reasons for not using condom in sexual intercourses during the 6 months before the surveybc

   

 Condom not available at the time of intercourse

107 (17.3)

187 (16.1)

294 (22.8)

 Too expensive

13 (2.1)

23 (2.0)

36 (2.8)

 Use of other contraceptive methods

152 (24.8)

449 (38.6)

601 (46.8)

 Felt it was not necessary

88 (14.3)

148 (12.7)

236 (18.4)

 Felt it was an obstacle to sexual intercourse

98 (15.9)

154 (13.4)

252 (19.6)

 Don’t know

40 (6.5)

103 (9.0)

143 (11.2)

Contraceptive methods used as alternative to condombc

   

 Hormonal contraceptives

170 (42.0)

469 (52.7)

639 (49.4)

 Others

39 (9.6)

86 (9.9)

125 (9.7)

 None

196 (48.5)

362 (40.8)

558 (43.2)

 Don’t know

16 (3.9)

6 (0.7)

22 (1.7)

Reported genital symptoms or diseasesac

   

 Itching

56 (7.5)

325 (25.5)

381 (18.9)

 Burning sensation

28 (3.8)

232 (18.2)

260 (12.9)

 Vaginal/urethral discharge

0 (0.0)

352 (27.7)

352 (17.5)

 Pain during sexual intercourse

5 (0.7)

209 (16.4)

214 (10.6)

 Pelvic pain

0 (0.0)

59 (4.8)

59 (2.9)

 Testicular pain

51 (6.7)

0 (0.0)

51 (2.5)

 Genital ulcers

0 (0.0)

0 (0.0)

0 (0.0)

 Condylomas

1 (0.1)

2 (0.2)

3 (0.1)

 None

619 (83.2)

587 (46.1)

1206 (59.8)

  1. aPercentages calculated on the total of sexually active students (n = 2059)
  2. bPercentages calculated on the total of sexually active students during the 6 months before the survey (n = 1816)
  3. cThe sum of percentages is more than 100 % because more than one answer was allowed