A computational approach to compare regression modelling strategies in prediction research

Table 1 A comparison of modelling strategies against the null strategy in the full Oudega DVT data

Strategy	Victory rate (%)	Median	IQR	Mean shrinkage
1. Heuristic shrinkage	56.9	−0.2	1.5	0.97
2. Split sample shrinkage	66.8	−0.2	0.7	0.98
3. 10-fold CV shrinkage	48.0	0.0	0.1	1.00
4. Bootstrap shrinkage	66.4	−0.3	1.0	0.97
5. Firth penalization	66.9	−0.2	0.6	-*

Victory rates and associated metrics are presented. Values are based on 5000 comparison replicates. Abbreviations: IQR interquartile range, CV cross-validation
*No mean shrinkage for the Firth penalization strategy is presented as shrinkage occurs during the coefficient estimation process

ISSN: 1471-2288