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Heterogeneity between hospitals in fixed and random effect logistic regression analysis
| Fixed effect | Random effect | |
|---|---|---|
| Unadjusted | χ2 = 48, 9 df, P < 0.0001 | τ2 = 0.38, χ2 = 24, 1 df, P < 0.0001 |
| Twelve confounders | χ2 = 24, 9 df, P = 0.0042 | τ2 = 0.18, χ2 = 4, 1 df, P = 0.0275 |
χ2: Difference on −2 log likelihood scale of model with and without hospital. τ2: Variance of the random effects on log odds scale.
