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Table 2 Variables affecting initiation of smoking (new smokers) during 6 years of medical education.

From: The incidence of smoking and risk factors for smoking initiation in medical faculty students: cohort study

Variables n New smokers % Relative risk 95% CI p*
Gender
   Female 37 8 21.6    
   Male 56 22 39.3 1.817 (0.91–3.64) 0.074
Family location
   Urban 59 17 28.8    
   Rural 34 13 38.2 1.327 (0.74–2.38) 0.349
Other smokers among friends
   No 65 16 24.6    
   Yes 28 14 50.0 2.031 (1.16–3.57) 0.016
Smoking family members
   No 39 10 25.6    
   Yes 54 20 37.0 1.444 (0.76–2.73) 0.246
Tea consumption
   No 6 3 50.0    
   Yes 87 27 31.0 0.621 (0.26–1.47) 0.383**
Alcohol use
   No 84 27 32.1    
   Yes 9 3 33.3 1.037 (0.39–2.75) 1.0**
Coffee consumption
   No 40 10 25.0    
   Yes 53 20 37.7 1.509 (0.80–2.86) 0.193
Boyfriend/girlfriend
   No 59 16 27.1    
   Yes 34 14 41.2 1.518 (0.85–2.71) 0.163
Sports
   Playing 13 4 30.8    
   Not playing 80 26 32.5 1.056 (0.44–2.53) 1.0**
Nutrition
   Sufficient 73 20 27.4    
   Insufficient 20 10 50.0 1.825 (1.03–3.25) 0.05
  1. *: Chi-square test, **: Fisher's exact test, %: individuals who started smoking during 6 years/total number of individuals, CI: confidence interval.