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. 2015 Apr 17;15:388. doi: 10.1186/s12889-015-1746-x

Table 1.

Demographic and sexual behaviour characteristics of grade 10–12 students segregated by gender

Variables Total n = 2970 Female n = 1632 Male n = 1338 P value
Age groups 0.000
  14*–19 years 2741(92.3) 1535 (94.1) 1206 (90.1)
  20 years and more 229 (7.7) 97 (5.9) 132 (9.9)
Mean age 17.4 years
Grade 0.012
  Grade 10 1223 (41.2) 637 (39.0) 586 (43.8)
  Grade 11 1345 (45.3) 754 (46.2) 591 (44.2)
  Grade 12 402 (13.5) 241 (14.8) 161 (12.0)
Have boyfriend or girlfriend 0.424
  No 600 (20.2) 321 (19.7) 279 (20.85)
  Yes 2370 (79.8) 1311 (80.3) 1059 (79.2)
Ever had sex 0.000
  No 1157 (39.0) 753 (46.2) 404 (30.2)
  Yes 1810 (61.0) 878 (53.8) 932 (69.8)
Number of sexual partners in the past year 0.000
  One partner 1278 (50.2) 878 (62.1) 400 (35.1)
  Two partners 600 (23.5) 317 (22.4) 286 (25.1)
  More than two partners (26.3) 219 (15.5) 452 (39. 8)

*Only one student was 14 years old.