Table 1.

Baseline demographics, clinical measures, and biomarker levels of participants

		Total sample N = 210		PCGT N = 106		MBSR N = 104		p
Variable	Subgroup	n	%	n	%	n	%
Sample size	Minneapolis	116	55	59	51	57	49	ns
	Tuscaloosa	94	45	47	50	47	50	ns
Sex	Male	176	84	93	88	83	80	ns
	Female	34	16	13	12	21	20	ns
Race	White	129	61	66	51	63	49	ns
	Black	67	32	35	52	32	48	ns
	Other	14	7	5	36	9	64	ns
Hispanic	No	201	96	104	52	97	48	ns
	Yes	8	4	2	25	6	75	ns
Period of service	Vietnam	118	56	61	52	57	48	ns
	Gulf War	35	17	21	60	14	40	ns
	OEF-OIF	33	16	16	48	17	52	ns
	Other	23	11	8	35	15	65	ns
Length of military (years)	< 3	90	43	50	56	40	44	ns
	3 to 4	28	13	15	54	13	46	ns
	> 5	91	44	41	45	50	55	ns
		Mean	SD	Mean	SD	Mean	SD
Age (years)		55	12	55	12	55	12	ns
CAPS-IV		75.08	19.86	72.42	20.08	77.80	19.37	0.049
PCL		61.68	12.21	59.27	12.35	64.14	11.62	0.004
PHQ9		20.68	8.71	20.04	8.71	21.34	8.71	ns
FFMQ		108.56	17.24	108.51	16.62	108.61	17.92	ns
Cortisol (mcg/dL)		10.90	5.15	11.78	5.38	10.07	4.81	0.037
IL-6 (pg/mL)		2.25	2.30	1.97	1.81	2.52	2.67	ns
CRP (mg/L)		2.78	2.20	2.73	2.20	2.83	2.22	ns

Bolded values significant for p < 0.05

MBSR mindfulness-based stress reduction, PCGT present-centered group therapy, CAPS-IV Clinician-Administered PTSD Scale for DSM-IV, PCL PTSD Checklist, FFMQ Five Facet Mindfulness Questionnaire, IL-6 interleukin 6, CRP C-reactive protein, SD standard deviation, ns nonsignificant