Table 1.

Comparison of power calculations

Adult effect	True effect in peds	Bayes power ν=0.8 (%)	Bayes power ν=0.5	Traditional (%) power (%)
2.25	1	36	74	10
2.25	2	63	91	27
2.25	3	84	98	52
2.25	4	95	99	77
2.25	5	99	99	92