Skip to main content

Table 2 Summary of univariately significant independent variables on LoS

From: Predicting length of stay from an electronic patient record system: a primary total knee replacement example

Variable p-value Test type Test value Order of modelling
Admission year <0.0001 Mann-Whitney U = 104842283 1
Age at admission <0.0001 Spearman’s r = 0.26 2
Age2 <0.0001 Spearman's r = 0.26 3
Gender <0.0001 Mann-Whitney U = 652862 4
Consultant <0.0001 Kruskal-Wallis χ 2(9) = 75.76 5
Admission day of week <0.0001 Kruskal-Wallis χ 2(6) = 146.15 6
Discharge destination <0.0001 Kruskal-Wallis χ 2(2) = 35.37 7
IMD 0.01 Spearman’s r = 0.06 8
Ethnicity 0.03 Mann-Whitney U = 68095 9