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Table 1 Sample size estimates

From: Neonatal ECMO Study of Temperature (NEST) - a randomised controlled trial

Assumed mean scores of the two arms Assumed SD of Bayley-III cognitive scores Total sample size required for 90% power Number needed to be recruited assuming 80% survival to 2 years
85 & 95 15 94 118
85 & 95 10 42 53
90 & 95 10 168 210