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

Table 8 One-stage IPD meta-analyses investigating the interaction between treatment and overweight status

Framework	Covariate	Cox			Poisson (1)			Poisson (0.5)			Poisson (0.25)
		Hazard Ratio	95% CI		Hazard Ratio	95% CI		Hazard Ratio	95% CI		Hazard Ratio	95% CI
Classical	Treatment when w _ij = 0, exp $({\hat{β}}_{1})$	0.858	0.736	1.001	0.858	0.736	1.001	0.858	0.736	1.001	0.859	0.736	1.001
	Overweight, exp $({\hat{β}}_{1})$	0.726	0.630	0.835	0.725	0.630	0.835	0.726	0.630	0.835	0.726	0.630	0.835
	Treatment when w _ij = 1, exp $({\hat{β}}_{1} + \hat{γ})$	0.896	0.784	1.024	0.896	0.784	1.023	0.896	0.784	1.024	0.896	0.784	1.024
Bayesian	Treatment when w _ij = 0, exp $({\hat{β}}_{1})$	-	-	-	0.857	0.734	0.993	0.860	0.736	1.000	0.859	0.733	0.999
	Overweight, exp $(\hat{μ})$	-	-	-	0.725	0.634	0.836	0.726	0.632	0.838	0.725	0.631	0.840
	Treatment when w _ij = 1, exp $({\hat{β}}_{1} + \hat{γ})$	-	-	-	0.896	0.781	1.022	0.896	0.787	1.023	0.897	0.785	1.025

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