. Author manuscript; available in PMC: 2021 Oct 1.

Published in final edited form as: Brain Behav Immun. 2020 May 29;89:59–66. doi: 10.1016/j.bbi.2020.05.069

Table 1.

Baseline Characteristics and Treatment Information for the Study Sample (n=40)

		Sex differences (males vs females)			Group differences (responders vs non-responders)
	Overall	Male	Female	Sex difference¹	Responders (n=20)	Non-Responders (n=20)	Responder difference¹
Demographic Information
Sex, M/F, n	18/22	45%	55%		11/9	7/13	p=0.20
Age, mean (SD), y	41.8 (13.7)	44.7 (14.5)	39.4 (12.9)	p=0.23	45.0 (12.6)	38.6 (14.4)	p=0.15
BMI, mean (SD), kg/m²	26.0 (4.8)	27.3 (3.6)	24.9 (5.4)	p=0.10	27.5 (4.7)	24.5 (4.4)	p=0.05
Education, mean (SD), y	15.47 (2.5)	15.4 (2.4)	16.0 (2.6)	p=0.42	15.8 (2.7)	15.6 (2.4)	p=0.81
Clinical information
Age at depression diagnosis, mean (SD), y	25.3 (12.5)	25.7 (12.1)	25.0 (13.1)	p=0.87	27.4 (13.1)	23.2 (11.8)	p=0.29
Current episode duration, mean (SD), y	2.1 (2.9)	2.5 (3.5)	1.8 (2.3)	p=0.48	2.1 (3.1)	2.2 (2.8)	p=0.86
Lifetime illness, mean (SD), y	16.4 (11.5)	18.9 (12.0)	14.4 (10.9)	p=0.21	17.5 (11.7)	15.3 (11.5)	p=0.56
Unipolar/bipolar depression, n	33/7	16/2	17/5	p=0.43	16/4	17/3	p=1.0
ECT treatment information
Unilateral/bilateral lead placement, n	26/14	10/8	16/6	p=0.33	17/3	9/11	p=0.02
Number of index ECT treatment sessions,	11.8 (3.4)	12.9 (4.0)	10.9 (2.4)	p=0.06	10.8 (3.2)	12.8 (3.3)	p=0.07
mean (SD)

Differences evaluated with t-test or χ² test