. Author manuscript; available in PMC: 2020 Aug 1.

Published in final edited form as: Brain Behav Immun. 2019 May 9;80:657–666. doi: 10.1016/j.bbi.2019.05.011

Table 1.

Demographic and clinical variables of the study sample, and their relationship to the peripheral inflammation as measured by plasma CRP.

Variable	Mean (s.d.) (n=44)	Correlation with CRP (R)	P-value^*
Demographic
Age (years)	38.0 (11.0)	−0.10	0.511
Sex, Male (n, %)	13 (29.5)	−0.152	0.352
Race
Caucasian (n, %)	16(36.4)	−0.155	0.316
African American (n, %)	28 (63.6)
Smoking status, yes (n, %)	8 (18.2)	−0.06	0.699
BMI (kg m⁻²)	30.8 (7.5)	0.65	<0.001
Clinical
IDS-SR	36(8.0)	0.22	0.15
IDS-SR-Anhedonia	4.8 (1.9)	0.289	0.057
SHAPS	5.6 (2.9)	0.225	0.142
TMT-A	33.5 (14.7)	0.28	0.065
FIT	39.9 (9.9)	−0.302	0.046
Inflammatory
CRP (mg l⁻¹)	2.2 (2.4)	NA	NA

Abbreviations: IDS-SR-Anhedonia, anhedonia subscale of the Inventory of Depressive Symptomatology-Self-Report; BMI, Body Mass Index; CRP, C-reactive protein; IDS-SR, Inventory of Depressive Symptomatology, Self-Report; SHAPS, Snaith-Hamilton Pleasure Scale; TMT-A, Trail Making Test Part A; FTT, Finger Tapping Test; NA, not applicable

P-value for the correlation with CRP.