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Table 1 Summary of published hypothermia trials, showing effect size

From: The TOBY Study. Whole body hypothermia for the treatment of perinatal asphyxial encephalopathy: A randomised controlled trial

Name of trial

Number in trial

Primary outcome and main secondary outcome

Effect size [assumed for TOBY]

Cool cap trial

218

Death or severe impairment at 18 months

RR 0.82 95%CI 0.66–1.02

NICHD Trial

208

Death or any impairment at 18 months

RR 0.73 95%CI 0.56–0.95

Eicher

65

Death or severe impairment at 12 months

RR 0.62 95%CI 0.41–0.92

TOBY

236

Death or severe impairment at 18 months

[RR 0.70]