Table 1.

Sample demographic information and affective cognition

	Control n = 784	MDD-r n = 282	MDD-c n = 43	p value
Demographic information
Age (years), median (IQR)a	62 (7.3)	60 (10.8)	60 (7.3)	1.2 × 10−8 A
Sex female, n (%)b	417 (53.2)	200 (70.9)	32 (74.4)	1.4 × 10−7 A
Educationb				0.22
Compulsory, n (%)	203 (25.9)	60 (21.3)	12 (27.9)
> Compulsory, n (%)	262 (33.4)	111 (39.4)	18 (41.9)
Post-secondary, n (%)	319 (40.7)	111 (39.4)	13 (30.2)
Handednessb				0.63
Right, n (%)	701 (89.4)	250 (88.7)	41(95.3)
Left, n (%)	56 (7.1)	19 (6.7)	1 (2.3)
Mixed, n (%)	27 (3.4)	13 (4.6)	1 (2.3)
Total QIDS, median (IQR)a	3 (2.0)	5 (4.0)	13 (6.0)	<2.2 × 10−16 B
Psychotropic medicationc, n (%)b	38 (4.8)	93 (33.0)	27 (62.8)	<2.2 × 10−16 B
Antidepressant medication, n (%)b	30 (3.8)	85 (30.1)	26 (60.5)	<2.2 × 10−16 B
Affective cognition
BERT, affective bias
N	773	282	42
Mean (s.d.)d	0.04 (0.24)	0.05 (0.23)	0.05 (0.23)	0.86
FAGN, affective bias
N	759	278	38
Mean (s.d.)d	−0.03 (0.08)	−0.03 (0.06)	−0.02 (0.07)	0.65
CGT, risk adjustment win
N	779	281	42
Mean (s.d.)d	0.96 (1.28)	0.93(1.29)	0.96 (1.11)	0.97
CGT, risk adjustment loss
N	778	281	42
Mean (s.d.)d	1.10 (1.29)	1.09 (1.25)	1.33 (1.12)	0.51

BERT, Bristol Emotion Recognition Task; CGT, adapted Cambridge Gambling Task; FAGN, Face Go/No-Go; MDD-c, current major depressive disorder; MDD-r, remitted from major depressive disorder; RA, risk adjustment; QIDS, Quick Inventory of Depressive Symptomatology.

^aKruskal Wallis test, if significant followed up by Dunn's test for pairwise comparisons.

^bChi-squared test, if significant followed up by pairwise chi-squared tests.

^cUse of antidepressant, antipsychotic, anticonvulsant, anxiolytic, hypnotic and/or mood-stabilising medications.

^dOne-way ANOVA test.

^ASignificant differences between control and MDD-r, and between control and MDD-c.

^BSignificant differences between all three groups.