. 2011 Mar 18;12:81. doi: 10.1186/1745-6215-12-81

Table 2.

Estimation of the attenuation factor, c, required to compute the correlations, R_is, between hazard ratios on the I-outcome and D-outcome.

Acc rate	α₁, α₂*, α*₃			Under H₁				Under H₀
				R₁₃	c	R₂₃	c	R₁₃	c	R₂₃	c
250	0.5, 0.25, 0.025	0.526	0.728	0.361	0.69	0.493	0.68	0.367	0.70	0.504	0.69
	0.2, 0.1, 0.025	0.776	0.907	0.529	0.68	0.594	0.66	0.529	0.68	0.598	0.66
500	0.5, 0.25, 0.025	0.527	0.728	0.369	0.70	0.476	0.64	0.383	0.73	0.487	0.67
	0.2, 0.1, 0.025	0.778	0.909	0.505	0.65	0.575	0.63	0.512	0.66	0.577	0.63

"Acc. rate" denotes the accrual rate of patients per unit time