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Table 2 Distribution of variables related to lifetime drug use, risk of drug use, exposure to drug use, parenting styles, and family violence concerning the control and intervention group (n = 805)

From: Short-term effects of the strengthening families Program (SFP 10–14) in Brazil: a cluster randomized controlled trial

 

Control

Intervention

Baseline

Follow-up

Change (Baseline-Follow-up)

Baseline

Follow-up

Change (Baseline-Follow-up)

n

%

n

%

%

95%CI

n

%

n

%

%

95%CI

Lifetime drug use by adolescents

 Alcohol

56

13.11

85

22.19

8.30

5.9; 10.6

51

13.82

76

22.89

7.84

5.30;10.38

 Binge drinking

17

4.03

31

8.14

4.17

1.50; 6.84

15

4.12

20

6.13

1.93

− 0.68;4.53

 Tobacco

13

3.04

20

5.22

1.78

0.06; 0.03

6

1.62

10

3.08

1.18

− 0.41;2.76

 Inhalants

33

7.76

33

8.62

1.72

− 1.85; 5.31

27

7.32

28

8.64

2.98

− 0.90;6.88

Risk perception of drug use by adolescents

 Alcohol

            

 No risk

29

6.82

15

3.94

− 2,5

− 4.0; − 1.0

32

8.72

16

4.95

− 2.4

− 4.1; − 0.6

 Light risk

41

9.65

31

8.14

− 3.0

− 4.8; − 1.2

46

12.53

232

9.91

− 2.7

− 4.7; − 0.7

 Moderate risk

117

27.53

84

22.05

− 3.9

− 6.3; − 1.6

86

23.43

73

22.60

− 3.1

− 5.4; − 0.8

 High risk

238

56.00

251

65.88

9.5

4.1; 14.9

203

55.31

202

62.54

8.2

2.3; 14.1

Tobacco

 No risk

28

6.57

13

3.41

− 1.8

− 3.2; − 0.4

25

6.79

16

4.95

− 2.2

− 3.9; − 0.6

 Light risk

31

7.28

27

7.09

− 1.9

− 3.4; − 0.4

34

9.24

22

6.81

− 2.3

− 3.9; − 0.6

 Moderate risk

101

23.71

76

19.95

− 3.4

− 6.0; − 0.7

92

25.00

66

20.43

− 3.7

− 6.4; − 1.0

 High risk

266

62.44

265

69.55

7.1

1.7; 12.4

217

58.97

219

67.80

8.2

2.3; 14.1

Marihuana

 No risk

25

5.88

15

3.94

− 2.3

− 3.84; − 0.72

24

6.52

19

5.88

− 1.06

− 2.96; 0.84

 Light risk

19

4.47

15

3.94

− 1.6

− 6.67; − 0.49

22

5.98

15

4.64

− 0.7

− 1.87; 0.54

 Moderate risk

57

13.41

33

8.66

− 3.1

− 5.24; − 1.03

49

13.32

40

12.38

− 1.2

− 3.35; 0.96

 High risk

324

76.24

318

83.46

7.0

2.39; 11.60

273

74.18

249

77.09

2.9

− 2.31; 8.16

Exposure of the child to drug use

      

 Social drinking

  Never

325

75.41

298

78.63

1.7

− 1.75; 5.11

270

73.57

249

77.09

3.0

− 0.59; 6.51

  Sometimes

82

19.03

57

15.04

− 1.2

− 3.55; 1.22

86

23.43

65

20.12

− 0.2

− 4.54; 0.42

  Always

24

5.57

24

6.33

− 0.5

− 1.57; 0.54

11

3.00

9

2.79

− 0.9

− 2.00; 0.19

 Get drunk

  Never

410

95.35

355

93.18

− 1.8

− 4.42; 0.84

332

91.21

307

95.94

4.3

1.50; 7.09

  Sometimes

14

3.26

19

4.99

1.4

− 0.68; 3.55

31

8.52

13

4.06

− 3.4

− 5.71; − 1.15

  Always

6

1.40

7

1.84

0.4

− 0.20; 0.91

1

0.27

0

0.00

− 0.9

− 1.56; − 0.16

 Smoke

  Never

386

89.98

336

88.65

− 2.3

− 4.78; − 0.14

322

88.95

286

89.10

− 0.9

− 3.50; 1.70

  Sometimes

26

6.06

23

6.07

0.8

− 0.79; 2.31

21

5.80

14

4.36

0.3

− 0.68; 1.21

  Always

17

3.96

20

5.28

1.6

− 0.22; 3.34

19

5.25

21

6.54

0.6

− 1.24; 2.51

 Parenting style

  Authoritative

169

41.42

163

43.47

2.67

− 3.5; 8.9

121

34.67

148

47.13

13.07

6.4; 19.8

  Authoritarian

71

17.40

62

16.53

− 0.5

− 5.1; 4.1

53

15.19

40

12.74

− 2.3

− 7.0; 2.4

  Indulgent

65

15.93

46

12.27

− 3.1

− 7.5; 1.3

58

16.62

43

13.69

− 2.5

− 7.4; 2.4

  Negligent

103

25.25

104

27.73

0.9

− 3.8; 5.7

117

33.52

83

26.43

− 8.3

− 13.6; − 2.9

 

Mean ± SD

Mean ± SD

Change

95%CI

Mean ± SD

Mean ± SD

Change

95%CI

Family violence

 Total violence

25.46 ± 2.56

25.81 ± 2.60

0.36

0.07; 0.65

24.82 ± 3.71

25.60 ± 3.14

0.77

0.31; 1.26

 Verbal discipline

7.38 ± 1.30

6.77 ± 0.77

0.65

− 0.76; − 0.55

7.26 ± 1.42

6.79 ± 0.75

0.48

− 0,63; − 0.32

 Physical discipline

17.40 ± 1.45

17.52 ± 1.45

0.13

− 0.05; 0.31

17.07 ± 2.38

17.37 ± 2.01

0.30

− 0.01; 0.61

  1. n.e. not estimable