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Table 5 Model results – model data

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

LoS grouping

Proportion of admissions

Total number of actual days stayed

Total number of days difference (Model vs Actual)

% difference in total number of days

Predicting within 1 days accuracy

Predicting within 2 days accuracy

Predicting within 3 days accuracy

4 to 6 days

50.8%

4469

1193

26.7%

41.1%

74.7%

91.4%

Shorter LoS

14.8%

729

780

107.0%

2.2%

30.4%

61.1%

Longer LoS

34.4%

6607

-1968

- 29.8%

24.3%

42.1%

59.2%

Total

100.0%

11805

5

0.0%

29.6%

56.9%

75.8%