TABLE 3.

Results of moderator analysis.

Moderator	No. Data Sets	Point Estimate	SE	Lower Limit	Upper Limit	Q	P
Age
Young children <10 yr	4	2.056	0.583	0.913	3.199
Older children >10 yr	10	1.328	0.336	0.670	1.986
Total between						1.169	0.280
Stimulation type
Muscle	6	1.873	0.537	0.821	2.925
Nerve	8	1.283	0.344	0.609	1.957
Total between						0.857	0.354
Stimulation number
Single	10	1.262	0.315	0.645	1.880
Multiple	4	2.217	0.652	0.940	3.495
Total between						1.741	0.187
Stimulation locationa
Muscle	3	1.719	0.583	0.576	2.862
Nerve	10	1.617	0.386	0.859	2.374
Total between						4.802	0.091
Muscle group
Lower body	12	1.196	0.250	0.707	1.686
Upper body	2	3.825	0.428	2.985	4.664
Total between						28.106	<0.001
Sex
Male	11	1.271	0.304	0.675	1.866
Male and female	3	2.472	0.664	1.170	3.775
Total between						2.705	0.100

^aBelanger and McComas (37) was not included because stimulus was evoked to the muscle (DF) and nerve (PF).