Table 1

Covariates in the logistic regression model.

Covariate (name in model)

Levels of covariate


Age Category (agegcat)

12 groups


Complex Elderly

1 = Yes, 0 = no


Male

1 = Yes, 0 = no


HRG with comorbidities/complications

1 = Yes, 0 = no


Admission on a weekend

1 = Yes, 0 = no


Interaction: Age Category and HRG with

comorbidities/complications

12 interaction terms


Admission Quarter

1 = Apr-Jun;

2 = Jul-Sep;

3 = Oct-Dec;

4 = Jan-Mar


Zero day stay†

1 = Yes, 0 = no


Weekend Admission

1 = Yes, 0 = no


† Only applicable for the elective admissions models

Mohammed et al. BMC Health Services Research 2012 12:87   doi:10.1186/1472-6963-12-87

Open Data