Type of Intervention

n

Knowledge variables %

Attitudes variables %

Practice variable %

Best scores variables %

At least three signs of STI

The three prevention modes of HIV/AIDS

Pregnancy prevention using menstrual calendar

Favorable to do the HIV test

Dialogue with the parents

No had sex in the past three months

Had protected sex with condom use**

Knowledge Score

Attitude Score

Practice Score

Control

Before

159

36.5

56.8

64.2

49.1

13.8

64.2

21.1

12.6

7.6

71.7

After

149

39.6

53.2

65.1

50.3

12.8

37.6

17.2

11.4

6.7

48.3

π1 - π2*

3.1

−3.6

0.9

1.2

−1

−26.6

−3.9

−1.2

−0.9

−23.4

P value

0.573

0.671

0.862

0.822

0.779

0.000

0.557

0.752

0.776

0.000

Intervention “A”

Before

153

39.2

32

64.5

49

51

64.1

43.6

6.5

26.8

79.7

After

143

76.2

44.8

76.2

61.7

44.1

42.7

37.8

30.8

28.4

64.3

π1 - π2

37

12.8

11.7

12.7

−6.9

−21.4

−5.8

24.3

1.6

−15.4

P value

0.000

0.024

0.022

0.029

0.233

0.000

0.495

0.000

0.763

0.003

Intervention “B”

Before

172

33.7

33.1

62.1

53.5

50.6

72.1

35.4

11.1

27.3

82.0

After

148

79.9

64.4

79.7

73.2

63.1

69.8

56.5

43.9

46.3

85.9

π1 - π2

46.2

31.3

17.6

19.7

12.5

−2.3

21.1

32.8

19

−0.3

P value

0.000

0.000

0.001

0.000

0.024

0.651

0.04

0.000

0.000

0.908