Combination of measures of handgrip strength and red cell distribution width can predict in-hospital complications better than the ASA grade after hip fracture surgery in the elderly

Table 3 Comparison of area under curve (AUC) after a receiver operating characteristic analysis between prediction models

	AUC	95% confidence interval
ASA grade	0.61	0.50 to 0.72
Grip strength	0.73	0.63 to 0.83
RDW + Grip strength	0.75	0.64 to 0.84
ASA grade + other variables^*	0.75	0.64 to 0.84
RDW + Grip strength + other variables^*	0.78	0.67 to 0.86

ISSN: 1471-2474