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Table 1 Participant characteristics using the complex samples procedure (N = 12313)

From: Predictors of consistent condom use based on the Information-Motivation-Behavior Skill (IMB) model among senior high school students in three coastal cities in China

Characteristic variables Number Weighting % (95% CI)
Gender    
  Male 958 48.4 (47.4–49.4)
  Female 6355 51.6 (50.6–52.6)
Age (years)    
  <17 3649 29.3 (25.7–33.2)
  17–18 6695 55.4 (51.0–59.6)
  >18 1969 15.3 (12.4–18.7)
Hometown    
  Shanghai 6290 49.8 (46.8–52.9)
  Sanming 3027 24.3 (21.4–27.5)
  Beihai 2996 25.9 (23.2–28.7)
School type    
  Model senior high school 2371 19.0 (16.0–22.5)
  Common senior high school 8053 64.0 (60.5–67.4)
  Vocational high school 1889 16.9 (14.6–19.6)
Average monthly income per person (CNY*)    
  <1500 3982 32.7 (31.3–34.1)
  1500-2500 5281 42.5 (41.4–43.6)
  >2500 3050 24.8 (23.7–25.9)
Experience of premarital sex    
  Yes 552 4.5 (4.1–5.5)
  No 11761 95.4 (95.0–95.9)
Condom use in sexual debut    
  Yes 132 25.0 (21.2–29.1)
  No 420 75.0 (70.9–78.8)
Consistent condom use    
  Yes 65 11.6 (9.1–14.7)
  No 487 89.5 (85.0–90.3)
  1. * CNY Chinese Yuan; 6.30 CNY = 1 USD.