Table 2.

SF-8 scores, item response option distribution, and internal consistency (N = 1228)

SF-8 item		Mean (standard deviation)	Item response option distribution (%)						Internal consistency: item-summary score
			1	2	3	4	5	6	Mental health score	Physical health score
1	General health	43.27 (9.22)	4.89	14.17	27.28	30.94	12.21	10.50	0.66	0.37
2	Physical functioning	43.43 (10.18)	8.14	14.5	19.22	32.08	26.06		0.79	0.34
3	Role - physical	42.61 (10.41)	7.57	16.12	19.30	27.44	29.56		0.83	0.34
4	Bodily pain	44.88 (11.14)	7.57	18.00	20.03	18.49	18.57	17.35	0.76	0.39
5	Vitality	46.42 (10.27)	4.72	31.35	24.02	26.71	13.19		0.51	0.49
6	Social functioning	44.71 (10.29)	7.17	12.79	23.13	26.63	30.29		0.46	0.65
7	Role - emotional	42.56 (9.38)	5.94	14.01	19.79	28.91	31.35		0.46	0.71
8	Mental health	44.50 (11.12)	8.47	17.35	18.81	28.50	26.87		0.25	0.92
	Summary physical health score	42.67 (10.78)
	Summary mental health score	44.32 (11.33)