Table 4 

Comparisons of time children spent participating in physical activity by school 

School A 
School B 
Both 



N = 46 
N = 111 
N = 153 

Mean (SD) 
Mean (SD) 
Mean (SD) 

Watching television min/d * 
102 (115) 
18 (56) 
43 (87) 
In front of computer min/d * 
107 (175) 
6 (45) 
37 (113) 
Sitting on weekdays min/d 
135 (144) 
268 (672) 
181 (413) 
Sitting on weekends min/d * 
43 (51) 
61 (31) 
47 (47) 


*pvalue < 0.05 comparing the two schools using the ttest 

Merchant et al. Nutrition Journal 2007 6:1 doi:10.1186/1475289161 