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Table 1 Distribution of the sample based on the prevalence of friendship network and by background characteristics in Belo Horizonte, Minas Gerais, Brazil, 2010 (N = 891)

From: Association between binge drinking, type of friends and gender: A cross-sectional study among Brazilian adolescents

  

Most important groups of close friends

Independent

variables

School

Family

Hobbies and others **

Church

 

Total

n (%)

*p-value

Degrees of freedom

n (%)

n (%)

n (%)

n (%)

    

Binge drinking

Never

98 (24.7)

92 (23.2)

64 (16.2)

142 (35.9)

396 (100)

   
 

Less than monthly to monthly

74 (42.0)

42 (23.9)

26 (14.8)

34 (19.3)

176 (100)

28.978

0.000

6

 

Weekly to daily

29 (42.6)

15 (22.1)

11 (16.2)

13 (19.1)

68 (100)

   
 

Total

201 (31.4)

149 (23.3)

101 (15.8)

189 (29.5)

640 (100)

   

Age

15 to 16 years old

109 (27.6)

104 (26.3)

63 (15.9)

119 (30.1)

395 (100)

 

0.065

6

 

17 years old

64 (38.3)

34 (20.4)

22 (13.2)

47 (28.1)

167 (100)

11.873

  
 

18 to 19 years old

28 (35.9)

11 (14.1)

16 (20.5)

23 (29.5)

78 (100)

   
 

Total

201 (31.4)

149 (23.3)

101 (15.8)

189 (29.5)

640 (100)

   

Gender

Male

71 (31.8)

46 (20.6)

48 (21.5)

58 (26.0)

223 (100)

9.647

0.022

3

 

Female

130 (31.2)

103 (24.7)

53 (12.7)

131 (31.4)

417 (100)

   
 

Total

201 (31.4)

149 (23.3)

101 (15.8)

189 (29.5)

640 (100)

   

Type of School

Public

153 (31.2)

84 (17.1)

79 (16.1)

175 (35.6)

491 (100)

61.354

0.000

3

 

Private

48 (32.2)

65 (43.6)

22 (14.8)

14 (9.4)

149 (100)

   
 

Total

201 (31.4)

149 (23.3)

101 (15.8)

189 (29.5)

640 (100)

   

Mother’s educational background

O to 7 years of study

64 (31.4)

24 (11.8)

28 (13.7)

88 (43.1)

204 (100)

40.156

0.000

3

 

8 or more years of study

106 (31.7)

106 (31.7)

49 (14.7)

73 (21.9)

334 (100)

   
 

Total

170 (31.6)

130 (24.2)

77 (14.3)

161 (29.9)

538 (100)

   
 

O to 7 years of study

66 (29.9)

35 (15.8)

31 (14.0)

89 (40.3)

221 (100)

36.996

0.000

3

Father’s educational background

8 or more years of study

96 (35.2)

90 (33.0)

38 (13.9)

49 (17.9)

273 (100)

   
 

Total

162 (32.8)

125 (25.3)

69 (14.0)

138 (27.9)

494 (100)

   
 

High vulnerability (class I and II)

90 (29.3)

38 (12.4)

57 (18.6)

122 (39.7)

307 (100)

54.672

0.000

3

SVI

Low vulnerability (class III, IV and V)

111 (33.3)

111 (33.3)

44 (13.2)

67 (20.1)

333 (100)

   
 

Total

201 (31.4)

149 (23.3)

101 (15.8)

189 (29.5)

640 (100)

   
  1. *Chi-squared test.
  2. **Hobbies (friends from theater, dances, music activities, sports, and others).
  3. Note: the total number may differ due to missing values.