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

Table 2 Estimates of intervention effect in subgroups of interest

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 VO_2max						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 VO_2max						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 VO_2max						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

BMI – body mass index; CI – confidence interval; kg – kilogram; m – metre; NZEO – New Zealand European/Other; VO_2max – maximal oxygen uptake.

ISSN: 1479-5868