Table 3. Associations between TCI and bilirubin levels.

	Gilbert (n = 81)	Control (n = 150)	p	Effect size (Cohen’s d)
Disorderliness (NS4)	2.8±1.4	2.3±1.4	0.018*	0.4
Fatigability (HA4)	1.6±1.3	1.3±1.4	0.030*	0.2
Sentimentality (RD1)	6.4±1.6	5.9±1.5	0.042*	0.4
Empathy (C2)	5.4±1.1	5.7±1.2	0.041*	0.3
Transpersonal identification (ST2)	6.0±1.9	6.5±1.9	0.044*	0.3

TCI = Temperament and Character Inventory.

d = 0.2 is considered a ‘small’ effect size, 0.5 represents a ‘medium’ effect size, and 0.8 is a ‘large’ effect size.