Table 3.

Differences of mean heart rate and logarithmically transformed HF, LF, SDNN of the clinical sample compared with the controls

	Clinical sample	Clinical sample M (SD) n = 60	Controls M (SD) n = 53	Mean difference X1−X2	Cohens d	t-value
Log HF	Total	5.46 (0.86)	5.94 (0.83)	−0.46	0.57	2.96**
	SSRI−	5.64 (0.88)		−0.30	0.35	1.61 ns
	SSRI+	5.22 (0.79)		−0.72	0.89	3.45**
Log LF	Total	5.48 (0.86)	5.94 (0.87)	−0.48	0.53	2.86**
	SSRI−	5.58 (0.93)		−0.36	0.40	1.86 ns
	SSRI+	5.36 (0.76)		−0.58	0.71	2.73**
Log SDNN	Total	3.88 (0.34)	4.08 (0.33)	−0.20	0.60	3.19**
	SSRI−	3.94 (0.36)		−0.14	0.41	1.93 ns
	SSRI+	3.81 (0.30)		−0.27	0.86	3.38**
Heart rate	Total	73.2 (9.63)	76.2 (9.48)	−2.8	0.31	1.66 ns
	SSRI−	72.9 (10.32)		−3.3	0.33	1.52 ns
	SSRI+	72.9 (8.46)		−3.3	0.37	1.41 ns

ns = non-significant.

Patients with SSRI medication (SSRI+) and without SSRI medication (SSRI−) are analysed separately.

^**Significant at p < 0.01.