Comparison 4. Cooling plus xenon versus cooling alone: subgroup analysis by gestational age.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Mortality	1	92	Risk Ratio (M‐H, Fixed, 95% CI)	1.21 [0.56, 2.59]
1.1 Late preterm	1	6	Risk Ratio (M‐H, Fixed, 95% CI)	1.8 [0.10, 31.52]
1.2 Term	1	86	Risk Ratio (M‐H, Fixed, 95% CI)	1.16 [0.53, 2.58]