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Table 4 Characteristics of participants who were included in the overall analysis compared with those who were excluded

From: Randomised feasibility trial of a teaching assistant led extracurricular physical activity intervention for 9 to 11 year olds: Action 3:30

  Included Excluded Difference
Overall n Mean SD n Mean SD Mean 95% CI p
BMI SDS* 310 0.58 1.2 229 0.57 1.2 -0.008 -0.21 to 0.19 0.9390
Age (yrs) 310 10.0 0.55 229 10.1 0.59 0.14 0.05 to 0.24 0.0037
IMD** 310 18.9 17.3 215 23.2 17.2 4.3 1.3 to 7.3 0.0055
Control          
BMI SDS 157 0.52 1.2 98 0.19 1.3 -0.02 -0.33 to 0.28 0.8853
Age (yrs) 157 10.0 0.53 98 10.1 0.57 0.14 0.00 to 0.28 0.0495
IMD 157 16.9 16.1 91 24.8 17.5 7.9 3.6 to 12.2 0.0004
Intervention          
BMI SDS 153 0.64 1.1 131 0.62 1.2 -0.01 -0.29 to 0.26 0.9209
Age (yrs) 153 10.0 0.57 131 10.1 0.60 0.15 0.010 to 0.28 0.0357
IMD 153 21.0 18.4 124 22.0 17.0 1.0 -3.2 to 5.2 0.6376
  1. *BMI SDS: Age and sex standardised BMI (BMI z score).
  2. **IMD: Index of multiple deprivation score.