. Author manuscript; available in PMC: 2013 Jun 10.

Published in final edited form as: J Behav Med. 2009 Jun 13;32(5):466–477. doi: 10.1007/s10865-009-9217-4

Table 4.

Linear regression analyses examining the relationship between depression symptoms and post-traumatic stress symptom severity with 4 health-related quality of life outcomes: general health, functioning without pain, role functioning, and physical functioning

	General health					Functioning without pain
	β^a: step 1	β: step 2	β: step 3	β: step 4	β: step 5	β: step 1	β: step 2	β: step 3	β: step 4	β: step 5
Age	−0.11^*	−0.12^*	−0.11^*	−0.10^*	−0.11^*	−0.10	−0.10	−0.09^*	−0.09^*	−0.09^*
Education^b	0.16^**	0.15^**	0.12^**	0.06	0.06	0.17^**	0.16^**	−0.13^**	0.09^*	0.09^*
CD4 count		0.10^*	0.09^*	0.11^*	0.11^*		0.07	0.06	0.07	0.07
Viral load (log)		−0.20^**	−0.20^**	−0.14^*	−0.13^*		−0.05	−0.05	−0.01	0.01
On HAART^c		−0.22^**	−0.22^**	−0.20^**	−0.19^**		−0.09	−0.09	−0.08	−007
PTSD severity			−0.26^**	−0.11^**	−0.12^**			−0.23^**	−0.14^**	−0.15^**
Depression symptoms				−0.34^**	−0.40^**				−0.21^**	−0.26^**
PTSD × depression					0.12^*					0.10
ΔF	7.17^**	8.43^**	37.45^**	50.46^**	6.09^*	7.48^**	1.63	28.45^**	17.72^**	3.65
df	2,467	3,464	1,463	1,462	1,461	2,467	3,464	1,463	1,462	1,461
R²	0.030	0.080	0.149	0.233	0.243	0.031	0.041	0.097	0.130	0.137
ΔR²	0.030	0.050	0.069	0.084	0.010	0.031	0.010	0.056	0.033	0.007

	Role functioning					Physical functioning
	β: step 1	β: step 2	β: step 3	β: step 4	β: step 5	β: step 1	β: step 2	β: step 3	β: step 4	β: step 5

Age	−0.09	−0.08	−0.08	−0.07	−0.08	−0.22^**	−0.21^**	−0.20^**	−0.20^**	−0.20^**
Education	0.16^**	0.15^**	0.12^**	0.08	0.08	0.18^**	0.17^**	0.14^**	0.08^*	0.09^*
CD4 count		0.05	0.04	0.05	0.05		0.10^*	0.09^*	0.10^*	0.11^*
Viral load (log)		−0.09	−0.09	−0.06	−0.04		−0.02	−0.02	0.04	0.05
On HAART		−0.14^*	−0.14^*	−0.13^*	−0.12^*		−0.10	−0.10	−0.08	−0.08
PTSD severity			−0.29^**	−0.17^**	−0.18^**			−0.26^**	−0.11^*	−0.11^*
Depression symptoms				−0.26^**	−0.29^**				−0.34^**	−0.39^**
PTSD × depression					0.06					0.10^*
ΔF	6.60^**	2.39^*	44.21^**	28.16^**	1.23	16.81^**	2.86^*	34.48^**	50.73^*	4.41^*
df	2,467	3,464	1,463	1,462	1,461	2,467	3,464	1,463	1,462	1,461
R²	0.027	0.042	0.126	0.176	0.178	0.067	0.084	0.148	0.232	0.239
ΔR²	0.027	0.015	0.084	0.050	0.002	0.067	0.017	0.064	0.084	0.007

All β coefficients have been standardized

The referent group is having less than a college education

The referent group is not being on HAART

p < 0.05

^**

p < 0.01