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Table 4 Factors associated with ongoing unprotect sexual intercourse and multiple sexual intercourse during past 3 months by logistic regression models

From: Substance use, risky sexual behaviors, and their associations in a Chinese sample of senior high school students

  Unprotect sexual intercourse in last three months Multipal sexual partner in last three months
  B OR (95% CI) B OR (95% CI)
Age   NS   NS
Gender     
 Male   NS   NS
 Female   1.00   1.00
Father’s educational level     
 Middle school and below   NS   NS
 High school   NS   NS
 College and above   1.00   1.00
Mother’s educational level     
 Middle school and below   NS   NS
 High school   NS   NS
 College and above   1.00   1.00
Family income status     
 Low (<1500)   NS   NS
 Medium (1500–2499)   NS   NS
 High (≥2500)   1.00   1.00
Family structure     
 Single parent family   NS   NS
 Nuclear/large family   1.00   1.00
Cigarette smoking in last three months     
 Often/usually 0.18 2.04 (1.02-4.00) *   NS
 No/occasional   1.00   1.00
Drunk in last three months     
 Often/usually   NS   NS
 No/occasional   1.00   1.00
Illict drug use in last three months     
 Ever had 0.24 2.44 (1.15-5.26) *   NS
 Never had   1.00   1.00
Age of the first sexual intercourse in lifetime     
 ≤14 years   NS 0.89 2.45 (1.79-7.08) *
 15-17 years   NS 0.68 1.97 (1.24-5.73) *
 ≥18 years   1.00   1.00
Age of the first sexual partner     
 ≤14 years   NS   NS
 15-17 years   NS   NS
 ≥18 years   1.00   1.00
  1. Family income was expressed in RMB(yuan)/person/month.
  2. OR, odds ratio.
  3. CI, confidence interval.
  4. NS: no significance.
  5. *P<0.05.