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Table 2 Baseline characteristics of participants by study group and SIMD

From: The Daily Mile makes primary school children more active, less sedentary and improves their fitness and body composition: a quasi-experimental pilot study

  Total SIMD 4–5 SIMD 1–3 SIMD 1–3 vs SIMD 4–5
Age (years) 8.4 ± 2.0 (379) 8.4 ± 1.9 (264) 8.4 ± 2.0 (115) t = 0.033
 Intervention school 8.1 ± 2.0 (252) 8.1 ± 2.0 (182) 8.2 ± 2.1 (70) SMD = 0.004
 Control school 8.8 ± 1.8 (127) 8.9 ± 1.8 (82) 8.6 ± 1.8 (45) p = 0.974
Daily MVPA (min) 55 ± 22 (118) 56 ± 21 (92) 51 ± 25 (26) t = 1.024
 Intervention school 53 ± 22 (56) 52 ± 19 (42) 57 ± 29 (14) SMD = 0.227
 Control school 56 ± 22 (62) 60 ± 22 (50) 44 ± 17 (12) p = 0.308
Daily sedentary time (min) 345 ± 74 (118) 342 ± 70 (92) 356 ± 86 (26) t = 0.879
 Intervention school 337 ± 77 (56) 337 ± 70 (42) 337 ± 97 (14) SMD = 0.195
 Control school 352 ± 71 (62) 346 ± 70 (50) 378 ± 70 (12) p = 0.381
Total shuttle distance (m) 670 ± 351 (357) 702 ± 368 (252) 593 ± 294 (105) t = 2.695
 Intervention school 645 ± 351 (240) 658 ± 365 (173) 613 ± 314 (67) SMD = 0.313
 Control school 722 ± 347 (117) 800 ± 359 (79) 559 ± 255 (38) p = 0.007
Sum of skinfolds (mm) 35.1 ± 14.7 (327) 32.9 ± 13.0 (229) 40.4 ± 16.9 (98) t = 4.350
 Intervention school 33.8 ± 12.7 (213) 32.4 ± 11.9 (154) 37.5 ± 14.0 (59) SMD = 0.525
 Control school 37.6 ± 17.6 (114) 33.8 ± 15.0 (75) 44.8 ± 20.0 (39) p < 0.001
% meeting physical activity guidelines 36.4% (118) 39.1% (92) 26.9% (26) χ2 = 1.304, p = 0.253
OR = 0.573 (0.219–1.500), p = 0.260
 Intervention school 26.8% (56) 26.2% (42) 28.6% (14)
 Control school 45.2% (62) 50.0% (50) 25.0% (12)
% overweight or obese 16.8% (369) 12.4% (259) 27.3% (110) χ2 = 12.291, p < 0.001
OR = 2.660 (1.520–4.655), p < 0.001
 Intervention school 16.7% (246) 12.4% (178) 27.9% (68)
 Control school 17.1% (123) 12.3% (81) 26.2% (42)
  1. Values in columns 2–4 are means ± SD (n value) or percentage (n value). Comparisons are by t test or χ2 and odds ratio. Shuttle distance is given to the nearest metre. Accelerometer minutes are given to the nearest minute. This table includes only participants with valid measurements both before and after the intervention
  2. MVPA moderate to vigorous intensity physical activity, OR odds ratio, SD standard deviation, SIMD Scottish Index of Multiple Deprivation, SMD standardised mean difference