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Table 1 Descriptive data for entire sample (N = 1535)

From: A prospective study of methamphetamine use as a predictor of high school non-attendance in Cape Town, South Africa

Variable

n*

% (95% confidence interval)

Gender

1527

 

   Male

 

46.9 (43.5 - 50.3)

   Female

 

53.1 (49.7 - 56.5)

Age category

1505

 

   12-14 years

 

42.1 (34.4 - 50.3)

   15 years

 

26.8 (22.8 - 31.3)

   16 years

 

17.1 (13.6 - 21.4)

   17 years or older

 

13.9 (8.9 - 21.0)

Methamphetamine use

1535

 

   Never

 

91.2 (88.1 - 93.6)

   Life-time use (not past 12 months)

 

4.0 (2.9 - 5.7)

   Past 12 months use

 

4.8 (3.3 - 6.8)

Cannabis use

1535

 

   Never

 

75.2 (70.9 - 79.1)

   Life-time use (not past 12 months)

 

12.0 (9.8 - 14.6)

   Past 12 months use

 

12.8 (10.4 - 15.7)

Current smoking (past 7 days)

1535

25.4 (20.6 - 30.2)

Current alcohol use (past 7 days)

1535

7.0 (4.9 - 9.0)

Ever repeated a year at school

1534

29.1 (23.3 - 35.8)

Dropout/absent status

1535

 

   Dropped out/absent

 

43.1 (37.8 - 48.5)

   In school

 

56.9 (51.5 - 62.2)

Age > than norm for grade

1498

22.8 (13.5 - 32.0)

  1. * values are less than 1535 owing to missing values
  2. Confidence intervals adjusted for design of the study