Table 4.

Mental component score (MCS) with Kruskal–Wallis test.

Month 0
Variable	Statistics	Non-electrical amput	Non-electrical nonamput	Elec amput	Elec nonamput	p -value
MCS	Mean ± SD	45.27 ± 13.80	49.52 ± 12.07	46.00 ± 14.27	51.21 ± 10.71	0.2511
	Median	45	51	46	51
	n	30	516	11	29
Month 6
Variable	Statistics	Non-electrical amput	Non-electrical nonamput	Elec amput	Elec nonamput	p -value
MCS	Mean ± SD	46.85 ± 11.15	50.83 ± 11.67	51.22 ± 10.00	52.46 ± 12.40	0.1426
	Median	48	53	50	56
	n	26	452	9	26
Month 12
Variable	Statistics	Non-electrical amput	Non-electrical nonamput	Elec amput	Elec nonamput	p -value
MCS	Mean ± SD	48.11 ± 13.34	50.96 ± 12.25	55.67 ± 10.40	50.26 ± 12.82	0.3622
	Median	48	55	60	54
	n	28	400	9	23