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Table 1 Characteristics of intervention and control schools

From: The effect of dance mat exergaming systems on physical activity and health – related outcomes in secondary schools: results from a natural experiment

Schools Pupils on roll 2011 Index of multiple deprivation rank (1 = most deprived) Free school meals eligibility (%) Number of children recruited (number children invited)
Intervention 1 1,060 5,376 21.8 87 (185)
Intervention 2 375 5,376 48.0 20 (32)
Intervention 3 792 1,464 52.8 95 (180)
Intervention 4 1,174 20,324 51.6 37 (215)
Intervention 5 685 1,540 29.6 41 (110)
Mean (range) intervention schools 817 (375 to 1,174) 6,816 (1,464 to 20,324) 40.8 (21.8 to 52.8)  
Mean (range) eligible intervention schools not recruited 1059 (330 to 1576) 11,997 (30 to 31,728) 26.6 (10.1 to 59.5)  
Control 1 766 5,100 39.9 47 (60)
Control 2 1,224 29,926 15.4 170 (230)
Mean (range) control schools 995 (766 to 1,224) 17,513 (5,100 to 29,926) 27.7 (15.4 to 39.9)  
Mean (range) eligible control schools not recruited 815 (476 to 1,208) 7,110 (976 to 17,046) 41.0 (11.2 to 58.8)