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Table 3 Null and Full model main effects for patients, ZIP of residence and Hospital

From: Geographic disparities in the risk of perforated appendicitis among children in Ohio: 2001–2003

Intercepts

 

Tau

% variance

P-value

Null model (intercepts only)

    

   Intercept – patients

theta0

0.964

0.812

0.000

   Intercept – ZIP codes

b00

0.035

0.030

0.039

   Intercept – hospitals

c00

0.188

0.159

0.000

Full Model (all level 1 & 2 covariates)

    

   Intercept – patients

theta0

0.973

0.867

0.000

   Intercept – ZIP codes

b00

0.026

0.023

0.316

   Intercept – hospitals

c00

0.124

0.110

0.000