. Author manuscript; available in PMC: 2010 Oct 1.

Published in final edited form as: Psychosom Med. 2009 Aug 6;71(8):821–827. doi: 10.1097/PSY.0b013e3181b39aa1

Table 5.

Association between depression and HRV indices of autonomic nervous system activity

	Unadjusted mean			Adjusted mean^*
	No Anxiety Taylor < 9 mean±s.e,m.	Anxiety Taylor ≥ 9 mean±s.e,m.	p ^a	No Anxiety Taylor < 9 mean±s.e,m.	Anxiety Taylor ≥ 9 mean±s.e,m.	p
RMSSD (ms)	23.97 ± 2.29	15.67 ± 2.15	0.013	24.09 ± 2.09	15.24 ± 4.13	0.069
pNN50 (%)	5.08 ± 0.95	2.48 ± 1.44	0.19	5.17 ± 0.91	2.16 ± 1.79	0.15
SDNN (ms)	111.67 ± 6.19	107.68 ± 9.94	0.75	112.40 ± 6.00	105.29 ± 11.40	0.59
HF (ln.ms²)	4.14 ± 0.16	4.03 ± 0.35	0.74	4.17 ± 0.16	3.93 ± 0.31	0.50
LF (ln.ms²)	5.25 ± 0.20	5.13 ± 0.40	0.78	5.27 ± 0.20	5.06 ± 0.39	0.64
LF/HF	1.28 ± 0.03	1.29 ± 0.07	0.85	1.28 ± 0.03	1.30 ± 0.06	0.77

adjusted for age, sex, hypertension and diabetes status.

unadjusted p values were calculated using unpooled variances and adjusted degrees of freedom if homogeneity of variance was not present (i.e., Levene’s test for equivalence of variance p < 0.05; RMSSD and PNN50).