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Table 2 Estimates of intervention effect in subgroups of interest

From: The effect of active video games by ethnicity, sex and fitness: subgroup analysis from a randomised controlled trial

Change from baseline outcome Intervention Control Difference Lower 95% CI Upper 95% CI P of interaction
BMI (kg/m 2 )       
Gender       0.69
 Female 0.29 0.51 −0.22 −0.68 0.24  
 Male −0.19 0.12 −0.30 −0.57 −0.04  
Ethnicity       0.46
 NZEO −0.01 0.23 −0.24 −0.51 0.03  
 Maori 0.18 0.68 −0.50 −1.21 0.21  
 Pacific 0.04 0.25 −0.21 −0.66 0.24  
Baseline VO2max       0.93
 Low −0.12 0.10 −0.22 −0.62 0.18  
 Medium 0.23 0.44 −0.21 −0.62 0.21  
 High 0.03 0.36 −0.34 −0.76 0.09  
All 0.11 0.44 −0.33 −0.57 −0.08  
BMI z-score       
Gender       0.87
 Female 0.09 0.14 −0.05 −0.16 0.06  
 Male −0.06 0.02 −0.08 −0.16 0.00  
Ethnicity       0.61
 NZEO −0.02 0.05 −0.07 −0.16 0.02  
 Maori 0.03 0.14 −0.12 −0.28 0.05  
 Pacific 0.04 0.06 −0.03 −0.14 0.09  
Baseline VO2max       0.89
 Low −0.03 0.00 −0.03 −0.15 0.08  
 Medium 0.05 0.12 −0.07 −0.18 0.05  
 High −0.01 0.09 −0.10 −0.24 0.04  
All 0.01 0.09 −0.08 −0.15 −0.01  
Percentage body fat (%)       
Gender       0.82
 Female −0.98 0.03 −1.02 −2.39 0.35  
 Male −1.28 −0.53 −0.75 −1.59 0.09  
Ethnicity       0.36
 NZEO −1.49 −1.02 −0.47 −1.36 0.43  
 Maori −0.85 0.02 −0.87 −2.74 1.00  
 Pacific −0.94 0.72 −1.67 −3.19 −0.14  
Baseline VO2max       0.47
 Low −1.68 −0.88 −0.80 −1.99 0.38  
 Medium −0.24 −0.05 −0.20 −1.44 1.05  
 High −1.15 0.16 −1.32 −2.67 0.03  
All −0.99 −0.16 −0.83 −1.54 −0.12  
  1. BMI – body mass index; CI – confidence interval; kg – kilogram; m – metre; NZEO – New Zealand European/Other; VO2max – maximal oxygen uptake.