Fig. 1

Odd ratios of general complications per MFI group. n = 17,868. MFI: Modified Frailty Index, OR: odds ratio, CI: confidence interval, L: Lower bound of the confidence interval, U: Upper bound of the confidence interval. Odds ratio for each MFI group for each complication. All complications presented are significant at P < 0.001. 95% CI (***unless otherwise indicated)