Table 4.

The overall effect of whole egg consumption on body weight and by subgroups, using random-effects model

Study group	Number of studies	Number of participants	Meta-analysis			Heterogeneity
			WMD	95% CI	P effect	Q statistic	p within group	I2 (%)	P between group
Country
USA	14	544	0.197	− 0.351, 0.746	0.480	119.24	0.000	89.2%	0.001>
Other countries	8	573	0.371	− 0.077, 0.820	0.105	2.32	0.940	0.0%
Study design
Parallel	13	802	0.121	− 0.421, 0.663	0.662	98.36	0.000	87.8%	0.001>
Cross-over	9	315	0.409	− 0.140, 0.958	0.145	12.65	0.124	36.8%
Control group
Nothing	11	616	0.333	− 0.096, 0.763	0.128	14.50	0.151	31.0%	0.001>
Other foods or supplements	11	501	0.130	− 0.494, 0.753	0.684	92.80	0.000	89.2%
Duration
Less than 12 weeks	13	505	− 0.007	− 0.556, 0.542	0.979	92.11	0.000	87%	0.001>
12 weeks and more	9	612	0.517	0.013, 1.021	0.044	11.55	0.172	30.7%
Health status
Healthy	12	534	− 0.137	− 0.763, 0.489	0.668	80.13	0.000	86.3%	0.001>
Unhealthy	10	583	0.452	0.059, 0.846	0.024	13.80	0.130	34.8%
Dose of intervention
Less than 12 eggs per week	4	145	− 0.216	− 1.491, 1.058	0.739	0.04	0.998	0.0%	0.683
12 eggs per week and more	20	1071	0.256	− 0.193, 0.705	0.264	137.45	0.000	86.2%
Energy intake differences
No	17	823	0.589	0.031, 1.147	0.039	33.76	0.006	52.6%	0.001>
Yes	1	30	0.300	− 0.287, 0.887	0.316	0.00
Unclear	4	264	− 0.667	− 1.370, 0.037	0.063	52.56	0.000	94.3%
Calorie restriction
No	18	769	0.367	− 0.107, 0.841	0.129	49.48	0.000	65.6%	0.001>
Yes	4	348	− 0.099	− 1.305, 1.106	0.871	18.44	0.000	83.7%
Overall	22	1117	0.234	− 0.207, 0.675	0.299	136.85	0.000	84.7%	-

WMD Weighted mean difference, CI Confidence interval