Health related quality of life in trauma patients. Data from a one-year follow up study compared with the general population

Table 4 Multivariate linear regression analysis of five of the eight dimensions of SF-36 at 12 months

	Physical functioning			Mental health			General health			Bodily pain			Vitality
	Beta	95% CI	p	Beta	95% CI	p	Beta	95% CI	p	Beta	95% CI	p	Beta	95% CI	p
Age	-0.20	-0.39, -0 02	0.030	0.21	0.05, 0.36	0.010
ISS score dic^a							-10.59	-17.28, -3.90	0.002
LOT-R^b score	0.95	0.25, 1.66	0.080	1.21	0.66, 1.76	<0.001	1.74	0.95, 2.53	<0.001	0.96	0.12, 1.81	0.025	1.08	0.35, 1.80	0.004
Depression at baseline	-1.11	-2.01, -0.20	0.016	-1.44	-2.15, 0.73	<0.001				-1.23	-2.32, -0.14	0.027	-1.70	-2.64, 0.75	<0.001
IES^c score at baseline							-0.27	-0,49, -0.045	0.019	-0.31	-0.55, -0.07	0.011
Working before injury^d				12.27	5.4, 19.13	0.001
Most severe injury with head as reference category
Spine vs head	-9.49	-17.58, -1.41	0.022							-7.64	-17.23, 1.96	0.118
Extremities vs head	-10.85	-18.74, -2.95	0.007							-5.99	-15.33, 3.35	0.207
Thorax/abdomen vs head	0.56	-7.27, 8.39	0.888							-1.06	-10.49, 8.36	0.824
Face/external injury vs head	4.80	-7.43, 17.04	0.440							15.4	0.61, 30.19	0.041
Adjusted R²	0.24			0.38			0.28			0.27			0.29

n = 220-225 because of missing values for some variables.
^aISS score dic: Injury severity score dichotomous: ISS < 9 = 0, ISS ≥ 9 = 1, ^bLOT-R: Life orientation test revised, ^cIES: Impact of event scale, ^dWorking before injury yes = 1, no = 0

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