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Table 2 Logistic regression analysis of substance use on running away among the adolescents of the 2004--2006 street outreach programme in Taiwan.

From: Running away experience and psychoactive substance use among adolescents in Taiwan: multi-city street outreach survey

   Alcohol use Tobacco use
Experience of running away N n (%) aORa (95% CI) n (%) aORa (95% CI)
Lifetime use model      
   Severity of running away      
   Never ran away 15507 4520 (29.2) 1.0 2232 (14.4) 1.0
   Trial running awayb 441 217 (49.2) 1.5 (1.2-1.8) 164 (37.2) 1.9 (1.5-2.4)
   Extended running away 1141 724 (63.5) 1.9 (1.7-2.2) 657 (57.6) 2.9 (2.5-3.4)
Past 6-months' use model      
Time since the first running away      
   Never ran away 15507 3809 (24.6) 1.0 1523 (9.8) 1.0
   < 6 months 176 94 (53.4) 2.0 (1.4-2.8) 68 (38.6) 2.6 (1.7-3.8)
   ≥ 6 months 1450 773 (53.3) 1.7 (1.5-2.0) 603 (41.6) 2.5 (2.1-2.8)
   Betel nut use Illegal drug/inhalant use
Experience of running away N n (%) aOR a (95% CI) n (%) aOR a (95% CI)
Lifetime use model      
   Severity of running away      
   Never ran away 15507 400 (2.6) 1.0 239 (1.5) 1.0
   Trial running awayb 441 29 (6.6) 1.4 (1.0-2.1) 26 (5.9) 1.6 (1.0-2.6)
   Extended running away 1141 173 (15.2) 2.4 (1.9-3.1) 190 (16.7) 3.0 (2.3-3.9)
Past 6-months' use model      
Time since the first running away      
   Never ran away 15507 235 (1.5) 1.0 171 (1.1) 1.0
   < 6 months 176 7 (4.0) 1.1 (0.5-2.6) 13 (7.4) 2.1 (1.1-4.3)
   ≥ 6 months 1450 142 (9.8) 2.5 (1.9-3.3) 147 (10.1) 2.6 (1.9-3.4)
  1. aEstimates obtained from a logistic regression model, which took region clustering design effects into account and adjusted for survey year, gender, age, family structure, attending school, having a job, weekly allowance, truancy, and sexual experience
  2. bWith 44 subjects deleted from this analysis because they had a single episode of running away that lasting 1 day or less and was within the past 6 months