Zachary B. Fang, BS, Frances Y. Hu, BA, Shipra Arya, MD, Theresa W

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Preoperative frailty is predictive of complications after major lower extremity amputation Zachary B. Fang, BS, Frances Y. Hu, BA, Shipra Arya, MD, Theresa W. Gillespie, PhD, Ravi R. Rajani, MD Journal of Vascular Surgery Volume 65, Issue 3, Pages 804-811 (March 2017) DOI: 10.1016/j.jvs.2016.10.102 Copyright © 2016 Society for Vascular Surgery Terms and Conditions

Fig 1 Survival analysis of major lower extremity amputation (LEA) patients stratified by the Modified Frailty Index (mFI) score. Survival time is measured in days. Wilcoxon test statistic = 14.2491; P = .0141. mFI_trunc, Truncated mFI score. For mFI = 0, there were 35 patients at 0 days, 33 patients at 30 days, and 19 patients at 365 days. The number of censored patients was 14 at the end of the time period. For mFI = 1, there were 37 patients at 0 days, 33 patients at 30 days, and 21 patients at 365 days. The number of censored patients was 12 at the end of the time period. For mFI = 2, there were 98 patients at 0 days, 93 patients at 30 days, and 61 patients at 365 days. The number of censored patients was 28 at the end of the time period. For mFI = 3, there were 66 patients at 0 days, 62 patients at 30 days, and 39 patients at 365 days. The number of censored patients was 18 at the end of the time period. For mFI = 4, there were 70 patients at 0 days, 61 patients at 30 days, and 33 patients at 365 days. The number of censored patients was 18 at the end of the time period. For mFI ≥5, there were 73 patients at 0 days, 70 patients at 30 days, and 38 patients at 365 days. The number of censored patients was 20 at the end of the time period. The standard error did not exceed 10% for the specified time period. Journal of Vascular Surgery 2017 65, 804-811DOI: (10.1016/j.jvs.2016.10.102) Copyright © 2016 Society for Vascular Surgery Terms and Conditions

Fig 2 Survival analysis of major lower extremity amputation (LEA) patients stratified by the modified Frailty Index (mFI) score ≤2 and >2. Survival time is measured in days. Wilcoxon test statistic = 8.3731; P = .0038. bi_mfi of 0 signifies a mFI less than or equal to 2, while bi_mfi of 1 signifies a mFI greater than 2. For mFI ≤2, there were 170 patients at 0 days, 160 at 30 days, and 103 patients at 365 days. The number of censored patients was 52. For mFI >2, there were 209 patients at 0 days, 193 at 30 days, and 112 at 365 days. The number of censored patients was 54. The standard error did not exceed 10% for the specified time period. Journal of Vascular Surgery 2017 65, 804-811DOI: (10.1016/j.jvs.2016.10.102) Copyright © 2016 Society for Vascular Surgery Terms and Conditions