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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: Crit Care Med. 2020 Jul;48(7):1026–1033. doi: 10.1097/CCM.0000000000004329

Table 2.

Stepwise Assessment of Center-Level Variance in PICU Mortality

Fixed Effects Included in Model Variance of Hospital-Level Random Effect 95% CI of the Variance p
Hospital alone 0.354 0.235 – 0.533 <0.001
Hospital + patient factors 0.232 0.142 – 0.378 <0.001
Hospital + patient factors + center volume 0.192 0.113 – 0.323 <0.001