Table 3.

Baseline SF36^a health-related quality of life scores^b across quartiles of mid-arm muscle circumference in 792 MHD patients

Variables	Mid-arm Muscle Circumference Quartiles
	Quartile 1 (n = 199)	Quartile 2 (n = 198)	Quartile 3 (n = 199)	Quartile 4 (n = 196)	P for Trend
SF-36 mental health dimension	50 ± 20	55 ± 22	54 ± 20	53 ± 20	0.17
SF-36 physical health dimension	44 ± 21	47 ± 23	47 ± 21	46 ± 22	0.54
SF-36 scales
Body pain	56 ± 29	61 ± 29	60 ± 29	56 ± 28	0.99
General health	44 ± 24	47 ± 21	44 ± 21	44 ± 21	0.97
Mental health	62 ± 21	67 ± 21	67 ± 19	69 ± 20	<0.01
Physical function	44 ± 28	46 ± 31	48 ± 29	47 ± 30	0.36
Role emotional	42 ± 43	52 ± 44	48 ± 43	47 ± 42	0.42
Role physical	31 ± 39	37 ± 41	36 ± 42	36 ± 42	0.19
Functionality	57 ± 27	62 ± 29	63 ± 28	63 ± 27	0.08
Vitality	48 ± 21	50 ± 24	49 ± 21	47 ± 22	0.52

^aShort form quality of life score with 36 questions.

^bOf all the 792 patients under study, data of quality of life were available for 690 patients.