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Table 1 Baseline characteristics of the participants

From: Changes in the SF-8 scores among healthy non-smoking school teachers after the enforcement of a smoke-free school policy: a comparison by passive smoke status

  Total Non-smokers* Passive smokers** P-value
  n (%) n (%) n (%)  
Age        
   <50 years old 367 (53%) 225 (50%) 142 (59%) 0.036
   ≥50 years old 322 (47%) 222 (50%) 100 (41%)  
Sex        
   Male 257 (37%) 159 (36%) 98 (40%) 0.137
   Female 432 (63%) 288 (64%) 144 (60%)  
Managerial position        
   General teacher 572 (83%) 373 (83%) 199 (82%) 0.269
   Principal or vice-principal 60 (9%) 42 (9%) 18 (7%)  
   School nurse or dietitian 57 (8%) 32 (7%) 25 (10%)  
School type        
   Elementary school 437 (63%) 300 (67%) 137 (57%) 0.001
   Junior high school 221 (32%) 135 (30%) 86 (36%)  
   High school 31 (4%) 12 (3%) 19 (8%)  
Attitude towards smoke-free schools        
   Positive 555 (81%) 357 (80%) 198 (82%) 0.537
   Not positive 134 (19%) 90 (20%) 44 (18%)  
Total 689 447 242  
  1. *Non-smokers: Participants who were not exposed to environmental tobacco smoke at baseline
  2. **Passive smokers: Participants who were exposed to environmental tobacco smoke at baseline