Individual patient data meta-analysis of survival data using Poisson regression models

Table 9 One-stage IPD meta-analyses investigating a non-proportional treatment effect

Framework	Covariate	Poisson (1)			Poisson (0.5)			Poisson (0.25)
		Hazard Ratio	95% CI		Hazard Ratio	95% CI		Hazard Ratio	95% CI
Classical	Treatment when t < 1, exp $({\hat{β}}_{1})$	0.657	0.515	0.839	0.657	0.515	0.838	0.657	0.515	0.838
	Treatment when t ≥ 1, exp $({\hat{β}}_{1} + \hat{ϕ})$	0.935	0.837	1.045	0.936	0.838	1.045	0.936	0.838	1.045
Bayesian	Treatment when t < 1, exp $({\hat{β}}_{1})$	0.657	0.521	0.839	0.656	0.508	0.837	0.657	0.521	0.845
	Treatment when t ≥ 1, exp $({\hat{β}}_{1} + \hat{ϕ})$	0.934	0.833	1.049	0.936	0.841	1.045	0.935	0.835	1.042

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