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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%