Table 1.

Power function for two-sided tests for the two possible intervention analysis data sets. In this case, the power function is symmetric so only the power for δ ≥ 0 needs to be shown.

δ	T=36, n=60			n = 80 and T = 48
	φ = 0	φ = 0.25	φ = 0.5	φ = 0	φ = 0.25	φ = 0.5
0	0.050	0.050	0.050	0.050	0.050	0.050
0.25	0.159	0.117	0.091	0.206	0.144	0.106
0.5	0.480	0.324	0.219	0.624	0.430	0.281
0.75	0.817	0.616	0.425	0.927	0.762	0.543
1.	0.968	0.853	0.656	0.995	0.946	0.787
1.25	0.998	0.964	0.839	1.000	0.994	0.931
1.5	1.000	0.995	0.943	1.000	1.000	0.985
1.75	1.000	1.000	0.985	1.000	1.000	0.998
2.	1.000	1.000	0.997	1.000	1.000	1.000