Evaluation of serum amino acids and non-enzymatic antioxidants in drug-naïve first-episode major depressive disorder

Table 1 The characteristics of the study population

Characteristics	MDD patients (n = 247)		Healthy controls (n = 248)
	Median	Q₁-Q₃	Median	Q₁-Q₃	p value
Age in years	29.0	18.4–60.3	34.0	18.8–60.2	0.351^a
Sex, male/female	91/156		102/146		0.407^b
Education, illiterate/literate	32/215		26/222		0.721^b
Monthly income (KBDT)	19.25	5.5–37.6	20.34	6.4–38.5	0.412^a
BMI (kg/m²)	22.70	16.91–31.72	23.44	14.44–30.58	0.146^a
Ham-D	17.4	8.43–27.72	3.64	2.17–6.53	< 0.001^a*

^ap values from independent sample t-test, ^bp values from Fisher’s exact test, p is significant at the 0.05 level, ^* Bonferroni-corrected p value < 0.05: patients > controls (p < 0.001)
KBDT Kilo Bangladeshi taka, BMI Body mass index, Q₁ lower quartile, Q₃ upper quartile

ISSN: 1471-244X