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Table 3 Logistic regression for substance use outcomes and age at menarche among 14-15 year old Canadian girls

From: Age at menarche and current substance use among Canadian adolescent girls: results of a cross-sectional study

  Current
Smoking
Drunk in the
past 12 months
Drugs in the
past 12 months
  OR (95% CI)† OR (95% CI)† OR (95% CI)†
Age at menarche    
   Early 2.49 (0.64-9.74) 1.77 (0.49-6.38) 5.97 (0.36-99.16)
   Average 1.65 (0.57-4.78) 1.13 (0.44-2.88) 5.40 (0.37-79.01)
   Late 1 1 1
Household income    
   Lowest & Lower middle 0.58 (0.09-3.83) 0.15 (0.02-1.17) 0.10 (0.01-4.80)
   Middle 1.13 (0.41-3.10) 0.82 (0.32-2.10) 0.57 (0.20-1.62)
   Upper middle 1.38 (0.59-3.22) 0.86 (0.39-1.86) 0.73 (0.33-1.62)
   Highest 1 1 1
Residence    
   Rural 0.89 (0.40-1.97) 1.58 (0.75-3.33) 1.63 (0.71-3.73)
   Urban 1 1 1
PMK education    
   Less than secondary 1.57 (0.49-5.00) 0.98 (0.32-3.02) 1.30 (0.36-4.70)
   Secondary school graduation 1.15 (0.49-2.68) 1.25 (0.58-2.69) 1.14 (0.53-2.45)
   Beyond high school 0.98 (0.34-2.81) 1.23 (0.55-2.78) 1.61 (0.66-3.88)
   College or university degree 1 1 1
Province of residence‡    
   Eastern 2.51 (0.93-6.77) 0.84 (0.38-1.84) 2.20 (0.86-5.59)
   Central 1.73 (0.76-3.94) 0.78 (0.40-1.50) 2.09 (0.98-4.50)
   Western 1 1 1
PMK immigration status    
   No 2.15 (0.61-7.53) 1.64 (0.51-5.22) 1.98 (0.67-5.87)
   Yes 1 1 1
Living with both parents    
   No 1.40 (0.58-3.41) 2.23 (0.83-5.99) 2.26 (0.80-6.40)
   Yes 1 1 1
Relationship with mother    
   Very close 1 1 1
   Somewhat close 1.27 (0.56-2.88) 0.93 (0.48-1.78) 1.10 (0.52-2.33)
   Not very close 0.89 (0.21-3.73) 1.38 (0.26-7.25) 0.69 (0.13-3.75)
Relationship with father    
   Very close 1 1 1
   Somewhat close 1.25 (0.51-3.06) 1.81 (0.89-3.70) 1.92 (0.83-4.46)
   Not very close 2.67 (0.99-7.20) 3.29 (1.32-8.21) 3.82 (1.31-11.15)
Work for pay    
   No 1 1 1
   Yes 1.41 (0.60-3.28) 1.74 (0.87-3.51) 1.92 (0.83-4.47)
School performance    
   Very well/Well 1 1 1
   Average/Poor/Very poor 3.25 (1.58-6.70) 2.08 (1.09-3.97) 3.02 (1.46-6.22)
Self score 0.95 (0.83-1.09) 0.95 (0.85-1.07) 0.98 (0.86-1.11)
  1. † 95% CI were calculated using bootstrapping technique
  2. ‡ Eastern Atlantic: Newfoundland & Labrador, Nova Scotia, Prince Edward Island & New Brunswick; Eastern Central: Quebec & Ontario; Western Prairies: Manitoba, Saskatchewan & Alberta; Western British Columbia: British Columbia