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Table 1 Descriptive characteristics of the total samplea by year

From: Teenage pregnancy rates and associations with other health risk behaviours: a three-wave cross-sectional study among South African school-going adolescents

BOYS GIRLS Total sample
Characteristics 2002 (N = 4930) % 2008 (N = 5106) % 2011 (N = 5166) % TOTAL BOYS (N = 15202) % 2002 (N = 5619) % 2008 (N = 5164) % 2011 (N = 5831) % TOTAL GIRLS (N = 16614) % 2002 (N = 10549) % 2008 (N = 10270) % 2011 (N = 10997) % ALL (N = 31 816) %
Age          - - - -
 Mean 16.9 16.1 16.6 16.6 16.4 16.1 16.3 16.2 16.6 16.1 16.4 16.4
 Standard deviation 3.3 1.9 2.0 2.5 2.6 1.9 1.9 2.2 2.9 1.9 1.9 2.3
Gender             
 Male - - - - - - - - 46.7 49.1 47.0 47.6
 Female - - - - - - - - 53.3 50.9 53.0 52.4
Race             
 Black African 74.7 78.7 82.4 78.7 73.5 79.1 82.3 78.3 74.1 78.5 82.4 78.4
 Coloured 14.4 13.7 10.1 12.6 15.6 14.8 10.0 13.4 15.0 14.2 10.0 13.0
 Indian 1.4 0.9 1.4 1.2 1.2 0.8 1.3 1.1 1.3 1.2 1.4 1.3
 White 8.4 6.0 4.7 6.4 8.8 4.4 5.3 6.2 8.7 5.3 5.1 6.3
 Other 1.1 0.7 1.4 1.1 0.9 0.9 1.1 0.9 0.9 0.8 1.2 1.0
Socio-economic status             
 Father has paid job 5 or more days a week 41.1 40.5 37.9 39.8 40.2 38.1 36.4 38.2 40.6 39.4 37.1 39.0
 Yes, works less than 5 days a week 8.6 9.2 8.5 8.7 8.5 7.4 7.4 7.7 8.5 8.3 7.9 8.2
 No, he gets a social grant b 7.0 7.3 10.6 b 7.3 7.3 10.7 b 7.1 7.3 10.6
 No, he is unemployed 17.5 10.9 11.1 8.2 17.4 12.2 12.0 8.9 17.5 11.6 11.6 8.6
 No, he is ill or disabled 2.6 1.4 1.1 2.7 2.7 1.6 0.9 2.2 2.6 1.5 1.0 2.4
 No, he has retired 5.5 3.5 3.0 7.6 4.1 2.7 2.3 7.9 4.8 3.1 2.6 7.7
 My father is deceased 16.5 10.0 13.3 10.6 18.4 13.0 14.7 12.1 17.5 11.5 14.1 11.4
 I don’t know 8.2 17.4 17.8 11.8 8.7 17.8 19.0 12.1 8.5 17.6 18.4 12.0
 Mother has paid job 5 or more days 29.8 32.4 31.2 31.2 32.4 30.8 31.1 31.4 31.2 31.7 31.1 31.3
 Yes, works less than 5 days a week 12.6 12.7 12.3 12.5 11.1 12.1 10.8 11.3 11.8 12.4 11.5 11.9
 No, she gets a social grant 23.3 9.5 10.7 14.4 24.8 11.6 12.1 16.3 24.1 10.5 11.4 15.4
 No, she is a housewife 20.0 21.9 20.5 20.8 19.6 24.1 23.8 22.5 19.9 22.9 22.2 21.7
 No, she is ill or disabled 2.1 2.0 1.7 2.0 1.9 1.8 1.7 1.8 2.0 1.9 1.7 1.9
 No, she has retired 3.6 3.8 3.7 3.7 2.3 2.5 3.1 2.6 2.9 3.1 3.4 3.1
 My mother is deceased 4.8 5.5 7.4 5.9 5.1 6.5 7.8 6.5 5.0 6.0 7.6 6.2
 I don’t know 3.6 12.2 12.5 9.5 2.8 10.6 9.7 7.6 3.2 11.4 11.0 8.5
Sexual behaviours             
 Ever had sex 50.9 45.1 45.2 47.0 34.0 30.1 29.8 31.3 41.9 37.6 36.9 38.8
aEver been pregnant 11.0 10.7 11.6 11.1 11.2 11.2 10.3 10.9 11.1 11.0 10.9 11.0
Violent behaviours             
 Ever been hit by boyfriend or girlfriend 15.3 24.7 19.2 19.2 13.6 21.1 17.2 16.6 14.4 23.0 18.2 17.9
 Ever hit your boyfriend or girlfriend 15.6 21.8 18.1 18.2 11.4 17.6 13.9 13.8 13.4 19.7 15.9 15.9
 Ever been forced to have sex 8.7 10.9 10.7 10.1 10.7 8.7 8.3 9.2 9.8 9.9 9.4 9.7
 Ever forced someone to have sex 9.7 11.6 11.3 10.9 6.3 6.4 5.1 5.9 7.9 9.0 8.0 8.3
Cigarette smoking             
 0 days 67.1 71.5 75.4 71.4 79.9 83.1 86.1 83.1 73.9 77.2 81.1 77.5
 1 or more days 32.9 28.5 24.6 28.6 20.1 16.9 13.9 16.9 26.1 22.8 18.9 22.5
Alcohol use             
 1 or more days 58.9 58.4 57.6 58.3 49.1 47.3 50.4 49.0 53.7 52.6 46.2 50.8
Binge drinking             
 1 or more day 31.7 36.8 33.7 34.1 21.1 24.9 24.0 23.3 26.1 30.8 28.6 28.5
Drugs             
 Marijuana 23.4 19.8 19.6 20.9 9.6 8.8 7.6 8.7 16.1 14.4 13.2 14.6
 Sniffed glue 11.7 14.7 13.9 13.5 7.5 7.5 6.7 7.2 9.5 11.4 10.1 10.3
 Mandrax 7.7 9.4 8.1 8.4 4.3 6.1 3.2 4.5 5.9 8.2 5.5 6.5
 Cocaine 7.3 8.8 7.7 7.9 3.8 4.1 3.2 3.7 5.4 6.9 5.3 5.9
 Heroin 11.1 7.6 8.5 9.1 9.1 4.4 2.9 5.4 10.0 6.4 5.5 7.3
 Injection 7.6 9.2 8.9 8.6 4.9 5.1 3.7 4.5 6.2 7.5 6.1 6.6
 Other 7.5 9.3 5.8 7.5 4.6 4.5 2.4 3.8 6.0 7.3 4.0 5.7
Psychological well-being             
 Ever had serious sad and hopeless feelings 24.8 24.5 24.3 24.5 25.1 24.0 25.7 24.9 25.0 24.4 25.0 24.8
 Suicidal 17.3 18.4 16.3 17.3 21.8 23.2 21.0 22.0 19.7 21.1 18.8 19.9
  1. aWhere boys were asked whether they have made someone pregnant and girls were asked if they ever been pregnant before
  2. b “No, he gets a social grant” was not available as an option in 2002 survey