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Table 2 Baseline characteristics of schoolchildren

From: Effectiveness evaluation of a health promotion programme in primary schools: a cluster randomised controlled trial

Study characteristics, total study population Intervention group (26 classes) Control group (27 classes)
Girls, n (%) [N] 189 (48) [391] 218 (53) [409]
Age (years), mean (SD) [N] 8.72 (0.43) [391] 8.71 (0.42) [370]
BMI, mean (SD) [N] 17.95 (3.50) [391] 17.77 (3.00) [419]
Socio-economic level, n (%)[N]
 low 34 (9) [384] 45 (11) [403]
 middle 295 (77) [384] 288 (72) [403]
 high 55 (14) [384] 70 (17) [403]
Residence, n (%)[N]
 House with garden 323 (84) [386] 314 (78) [403]
 Flat with garden 40 (10) [386] 57 (14) [403]
 Flat without garden 23 (6) [386] 32 (8) [403]
Hrs/week exercise [N] 3.96 [324] 3.98 [328]