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Table 3 C. trachomatis positivity according to demographical and behavioural characteristics of sexually active students (n = 2,059)

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

Demographical and behavioural characteristics

Positive test/total of students (%)

p-value a

Total

36/2059 (1.7)

-

Gender

 

>0.05

 Males

11/762 (1.4)

 Females

25/1297 (1.9)

School location

 

0.032

 City of Brescia

18/685 (2.6)

 Others

18/1374 (1.3)

Number of sexual partners during lifetime

 

0.004

 1

7/883 (0.8)

 2 or more

29/1168 (2.5)

Number of sexual partners during the 6 months before the survey

 

<0.001b

 0

2/243 (0.8)

 1

17/1491 (1.1)

 2 or more

17/317 (5.4)

Used condom during last sexual intercourse c

 

0.048

 No

25/1035 (2.4)

 Yes

9/783 (1.1)

Regular condom use during the 6 months before the survey c

 

0.002

 No

32/1278 (2.5)

 Yes

2/486 (0.4)

  1. aχ2 test for the comparison between positive and negative students at the C. trachomatis test
  2. bχ2 test for linear trend
  3. cPercentages calculated on the total of sexually active students during the 6 months before the survey (n = 1816)
  4. p-value considered significant at p < 0.05