The modified-Krishnan's FI and the CSHA-FI were effective in the prediction of postoperative mortality. But the modified-Krishnan's FI was more consistently associated with the recovery of hip function and daily activities at 3 months after the operation than that of the CSHA-FI. The modified-Krishnan's FI was more suitable to utilize for risk stratification, identifying deficits, and predicting recovery capacity in hip fracture patients.