Table 2.

Constructs of the SF-36 Health Survey questionnaire (for item numbers see Appendix 1).

Area	Dimension	Number of questions	Item Numbers
Functional status	Physical functioning	10	3a–j
	Social functioning	2	6 & 10
	Role limitations (physical problems)	4	4a–d
	Role limitations (emotional problems)	3	5a–c
Well-being	Mental health	5	9b, c, d, f, h
	Vitality	4	9a, e, g, I
	Pain	2	7 & 8
Overall evaluation of health	General health perception	5	1 & 11a–d
	Health change	1	2