Table 2.

Physical component score (PCS) with Kruskal–Wallis test.

Month 0
Variable	Statistics	Non-electrical amput	Non-electrical nonamput	Elec amput	Elec nonamput	p -value
PCS	Mean ± SD	35.90 ± 11.67	43.44 ± 10.71	34.00 ± 8.98	44.66 ± 9.90	0.0002
	Median	34	45	37	47
	n	30	516	11	29
Month 6
Variable	Statistics	Non-electrical amput	Non-electrical nonamput	Elec amput	Elec nonamput	p-value
PCS	Mean ± SD	38.69 ± 10.56	45.26 ± 11.08	37.67 ± 9.97	45.31 ± 9.09	0.0036
	Median	39	47	38	46
	n	26	452	9	26
Month 12
Variable	Statistics	Non-electrical amput	Non-electrical nonamput	Elec amput	Elec nonamput	p-value
PCS	Mean ± SD	39.18 ± 9.65	46.30 ± 10.67	40.11 ± 12.22	47.70 ± 10.20	0.0014
	Median	40	48	39	50
	n	28	400	9	23