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Table 3 Relationship between frequency of AS and associated factors

From: Adequate sleep among adolescents is positively associated with health status and health-related behaviors

Variables Adequate sleep χ2 (d.f. = 1) Odds ratio 95% Confidence Interval
  Higher Lower    
  n (%)    
Grader      
   Middle school (7th-9th) 246 (54.4%) 206 (45.6%) 47.49*** 3.40 2.4~4.9
   High school (10th-12th) 53 (26.0%) 151 (74.0%)    
Gender      
   Boys 159 (45.8%) 188 (54.2%) 0.02 1.02 0.7~1.4
   Girls 140 (45.3%) 169 (54.7%)    
Family structure      
   With both parents 264 (45.7%) 314 (54.3%) 0.02 1.03 0.6~1.7
   Others 35 (44.9%) 43 (55.1%)    
Family religion      
   Yes 196 (45.2) 238 (54.8) 0.09 1.05 0.8~1.5
   None 103 (46.4) 119 (53.6)    
Living location      
   Rural 207 (45.6%) 247 (54.4%) 0.00 1.02 0.7~1.4
   Urban 92 (45.5%) 110 (54.5%)    
Watching TV (weekday)1      
   Lower 230 (44.3) 289 (55.7) 1.60 0.78 0.5~1.1
   Higher 69 (50.4) 68 (49.6)    
Using Computer (weekday)2      
   Lower 221 (45.2) 268 (54.8) 0.10 0.90 0.6~1.3
   Higher 78 (46.7) 89 (53.3)    
  1. 12Lower/higher frequency: watching TV or using computer is defined as below/above the average total hours on weekdays for the sample.