Table 2

Medication use^* in the patient group

Medication	Subgroup (no. of patients)^†			Brightness induction^‡		Contrast suppression^‡

	Mood stabilizer (14)	Antipsychotic (21)	Antidepressant (78)	β	p value	β	p value
Valproate	0.29	0.10	0.03	0.060	0.58	−0.369	0.001^§
Lamotrigine	0.43	0.14	0.05	0.136	0.18	−0.072	0.45
Pregabalin	0.29	—	0.05	0.054	0.63	−0.076	0.47
Benzodiazepine	0.07	0.05	0.05	0.040	0.71	0.060	0.55
SSRI, SARI or SMS	0.36	0.43	0.68	−0.103	0.35	−0.092	0.37
SNRI or tricyclic antidepressant	0.36	0.14	0.32	−0.001	0.99	−0.036	0.75
Tetracyclic antidepressant	0.07	—	0.10	−0.039	0.70	−0.036	0.71
NDRI	—	0.05	0.06	−0.032	0.75	−0.027	0.78
Agomelatine	—	—	0.01	−0.042	0.68	−0.029	0.77
Other	0.07	0.05	0.03	0.023	0.82	0.116	0.24

NDRI = norepinephrine–dopamine reuptake inhibitor; SARI = serotonin antagonist and reuptake inhibitor; SMS = serotonin modulator and stimulator (vortioxetine); SNRI = serotonin-norepinephrine reuptake inhibitor; SSRI = selective serotonin reuptake inhibitor.
↵* Nineteen patients used no medication. Some patients used multiple medications.
↵† Proportion of patients using the medication in each subgroup.
↵‡ Brightness induction and contrast suppression β coefficients and p values are from linear regression analysis.
↵§ p < 0.01.