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Table 2 AIDS knowledge by education type and sexual activity of respondent

From: AIDS knowledge and sexual activity among Flemish secondary school students: a multilevel analysis of the effects of type of education

    Education type  
    ASO KSO TSO BSO Total
3rd grade Not sexually active M 15.3 15.3 13.5 11.3 14.4
   SD (3.9) (4.1) (4.8) (5.4) (4.5)
   N 2474 91 866 466 3897
   P (90.7%) (71.1%) (72.7%) (56.5%) (80.0%)
  Sexually active M 15.8 15.3 14.4 12.6 14.1
3rd grade   SD (3.9) (4.6) (4.5) (5.4) (4.9)
   N 255 37 326 359 977
   P (9.3%) (28.9%) (27.3%) (43.5%) (20.0%)
  Total M 15.4 15.3 13.8 11.8 14.4
   SD (3.9) (4.2) (4.8) (5.4) (4.6)
   N 2729 128 1192 825 4874
5th grade Not sexually active M 17.4 16.5 15.7 13.6 16.4
   SD (3.1) (3.4) (4.4) (5.4) (4.1)
   N 1489 55 743 364 2651
   P (68.5%) (37.7%) (44.1%) (32.5%) (51.7%)
  Sexually active M 17.7 17.1 16.4 14.8 16.3
5th grade   SD (3.1) (3.3) (4.0) (5.1) (4.3)
   N 686 91 941 757 2475
   P (31.5%) (62.3%) (55.9%) (67.5%) (48.3%)
  Total M 17.5 16.9 16.1 14.4 16.4
   SD (3.1) (3.3) (4.2) (5.2) (4.2)
   N 2175 146 1684 1121 5126
  1. M: mean; SD: standard deviation; N: cell size; P: proportion of grade
  2. Proportion of variance explained in AIDS knowledge: 3rd grade: 8.8%, p = 0.000; 5th grade: 8.9%, p = 0.000