Psychometric evaluation of health related quality of life among rural-to-urban migrants in China

Table 1 Descriptive statistics for SF-36 items and summary scores (N = 765)

Items	Mean	SD	Skewness	Response frequencies (%)
Items	Mean	SD	Skewness	1	2	3	4	5	6
Vigorous activities	2.28	0.65	−0.36	11	50	39
Moderate activities	2.77	0.47	−1.93	2	18	80
Carry the shopping	2.83	0.43	−2.55	2	13	85
Climb several stairs	2.73	0.48	−1.44	2	24	74
Climb one flight of stairs	2.92	0.29	−3.95	1	6	93
Bend, kneel, stoop	2.79	0.43	−1.81	1	19	80
Walk one kilometer and a half	2.67	0.54	−1.36	4	26	70
Walk one kilometer	2.78	0.47	−2.10	3	17	81
Walk one hundred meters	2.93	0.30	−4.42	1	5	94
Bathe, dress	2.94	0.28	−4.89	1	4	95
Cut down time	1.79	0.41	−1.41	21	79
Accomplished less	1.75	0.44	−1.14	25	75
Limited in kind	1.76	0.43	−1.19	24	76
Had difficulty	1.73	0.45	−1.04	27	73
Pain-Magnitude	4.27	0.72	−1.07	0	2	7	51	40
Pain-Interfere	4.35	0.81	−1.54	1	2	7	39	50
Subjective rating of health	3.31	1.06	0.22	0	28	30	25	17
Sick easier	3.74	1.08	−0.30	3	7	38	19	34
As healthy	3.86	0.97	−0.48	2	4	32	31	32
Health to get worse	3.53	1.11	−0.07	4	10	44	14	28
Health excellent	3.80	1.02	−0.58	3	6	30	32	30
Pep/Life	4.04	1.50	−0.57	8	10	17	13	37	14
Energy	4.28	1.16	−0.74	2	6	16	24	42	10
Worn out	4.25	1.22	−0.71	2	9	12	26	39	12
Tired	4.55	1.07	−1.05	1	5	7	25	48	14
Social-Extent	4.18	0.78	−1.26	1	2	9	53	35	0
Social-Time	4.75	1.23	−0.93	2	6	6	25	28	34
Cut down time	1.69	0.46	−0.80	31	69
Accomplished less	1.69	0.46	−0.84	31	69
Not careful	1.65	0.48	−0.64	35	65
Nervous	3.87	1.47	−0.26	6	16	16	24	23	15
Down in dumps	4.52	1.24	−0.92	2	7	7	24	39	21
Peaceful	4.15	1.22	−0.66	3	8	18	22	41	8
Blue/Sad	4.54	1.07	−1.14	2	4	7	26	48	14
Happy	4.34	1.20	−0.77	3	5	16	21	42	13

ISSN: 1477-7525