TABLE 3.

Parameter estimates of the ADC‐027 trial using different borrowing methods

Method	Time effect ${\beta }_5$			Treatment effect ${\beta }_6$
	Posterior mean	Posterior SD	95% CI	Posterior mean	Posterior SD	95% CI
No borrowing	0.521	0.039	(0.444, 0.596)	−0.022	0.051	($-0.121$, 0.079)
Conditional MPP	0.462	0.026	(0.411, 0.514)	0.034	0.040	($-0.045$, 0.112)
Marginal MPP	0.477	0.032	(0.416, 0.542)	0.022	0.046	($-0.068$, 0.109)
Commensurate prior	0.516	0.039	(0.441, 0.592)	−0.015	0.050	($-0.117$, 0.081)
Pooling	0.459	0.025	(0.411, 0.508)	0.039	0.040	($-0.039$, 0.116)