Table 4.

SF-8 Known Groups Validity Scores for SF-8 (N = 1206)

Variable/Group *	N	SF-8 Means	[95% CI]	SD	t
Physical Component Summary (PCS)
Physical health in last month: §
Physical health problem	828	38.83	[38.09–39.57]	10.84	16.03
Without physical health problem	378	49.62	[48.52–50.71]	10.83
PTSD: †
With PTSD	654	39.41	[38.49–40.32]	11.92	9.19
Without PTSD	552	45.53	[44.61–46.46]	11.08
Depression: ±
With depression	812	40.13	[39.31–40.95]	11.92	8.98
Without depression	394	46.50	[45.44–47.57]	10.77
Mental Component Summary (MCS)
Physical health in last month: §
Physical health problem	828	37.97	[37.10–38.83]	12.68	5.71
Without physical health problem	378	42.13	[40.84–43.42]	12.71
PTSD: †
With PTSD	654	35.39	[34.42–36.35]	12.54	12.13
Without PTSD	552	43.88	[42.91–44.85]	11.60
Depression: ±
With depression	812	36.14	[35.29–36.98]	12.26	13.02
Without depression	394	45.74	[44.60–46.88]	11.51

Abbreviations: CI, confidence interval; MCS, mental component summary; PCS, physical component summary; PTSD, post-traumatic stress disorder.

* P < 0.001(2-tailed) for all results between comparison groups.

§ Physical health problem in last month = respondents reporting the three main physical health conditions reported in the survey (fever/malaria; respiratory problems; diarrhoea).

† PTSD=Harvard Trauma Questionnaire mean score ≥2.00.

± Depression = Hopkins Symptoms Check List-25 mean scores ≥1.75.