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Results of quadratic regression analyses
| Dependent variable: Length of hospital stay | ||||||||
| Model summary | Parameter estimates | |||||||
| R2 | F | df1 | df2 | Model p value | Constant | Linear coefficient (p value) |
Quadratic coefficient (p value) |
|
| Alive within 30 days | 0.06 | 23.67 | 2 | 726 | <0.001 | 1.12 | 5.10 (p=0.01) | −0.41 (p=0.27) |
| Died within 30 days | 0.14 | 8.58 | 2 | 106 | <0.001 | 26.13 | −11.45 (p=0.001) | 1.65 (p=0.01) |
The independent variable is Waterlow score categories (4–9,10–14,15–19, 20–24, 25+).
