Table 2.

Comparison of the nitric oxide, nitrite, and nitrate levels between groups

	DD (n=23)	HC (n=21)	t/Z	P
Nitrite	2.94±3.08, 2.10 (1.80-3.00)	2.83±1.49, 2.30 (2.10-3.10)	−1.26	0.207
Nitrate	2.75±0.51, 2.70 (2.50-3.00)	3.23±0.85, 3.00 (2.80-3.50)	−2.69	0.007
NO	5.70±3.00, 5.20 (4.60-5.80)	6.07±2.33, 5.30 (4.90-6.75)	−1.09	0.274

P<0.05 is significant. Mann-Whitney U-test. Mean±SD or medians and IQR are reported. DD – Depressive disorder; HC – Healthy control group; NO – Nitric oxide; SD – Standard deviation; IQR – Interquartile range