Table 2.

Summary of between study variances from the BREM*

Cutoff date	Parameter	Estimate	Correlation (${\widehat{\rho }}_{\tau }$)	Area of prediction region
2009	${\tau }_0$	0.87 (0.53, 1.18)	0.16 (− 0.46, 0.71)	22.83
	${\tau }_1$	0.99 (0.48, 1.42)
2011	${\tau }_0$	0.87 (0.59, 1.08)	0.32 (− 0.16, 0.71)	16.65
	${\tau }_1$	0.85 (0.54, 1.17)
2013	${\tau }_0$	0.71 (0.54, 0.88)	0.44 (0.13, 0.73)	13.51
	${\tau }_1$	0.98 (0.69, 1.26)
Full	${\tau }_0$	0.69 (0.54, 0.82)	0.43 (0.12, 0.71)	11.94
	${\tau }_1$	0.92 (0.67, 1.16)

*All estimates are on the logit scales. Confidence intervals for ${\tau }_0$, ${\tau }_1,and{\widehat{\rho }}_{\tau }$ were estimated using parametric bootstrap with 1000 replicates.