Table 3.

Meta-analysis evaluation of the relationship between inhaled nitric oxide and acute kidney injury risk.

Subgroup	Number of studies	RR (95% CI)	p	Heterogeneity
				I2	Phet
All	15	1.00 (0.84–1.18)	0.977	31.6%	0.116
ARDS	4	1.55 (1.15–2.10)	0.004	0	0.649
Cardiac surgery	4	0.80 (0.64–0.99)	0.037	0	0.528
Organ transplantation	3	0.50 (0.16–1.56)	0.233	0	0.842
Others	4	1.67 (0.65–4.27)	0.286	0	0.747

ARDS: acute respiratory distress syndrome; CI: confidence interval; RR: relative risk.