The Modified Frailty Index and Its Association With Esophagectomy Outcomes

Hayley Reddington1, Samih Shafique1, Benjamin Palleiko1

  • 1Division of Thoracic Surgery, Department of Surgery, University of Massachusetts Chan Medical School, Worcester, Massachusetts.

Abstract

Insights

The modified Frailty Index (mFI-5) can predict major complications or mortality after esophagectomy. However, individual comorbidities within the mFI-5 are more predictive than the overall score for these adverse outcomes.

Area of Science:

  • Surgical oncology
  • Geriatric surgery
  • Outcomes research

Background:

  • Frailty, characterized by diminished physiological reserve, is linked to adverse surgical outcomes.
  • The modified Frailty Index (mFI-5) is a comorbidity-based measure associated with poorer results in some surgical settings.
  • The predictive value of mFI-5 for esophagectomy outcomes remains to be fully elucidated.

Purpose of the Study:

  • To determine if the modified Frailty Index (mFI-5) can predict major complications or 30-day mortality (M/M) after esophagectomy.
  • To assess the association between mFI-5 score and postoperative M/M in patients undergoing esophagectomy.
  • To compare the predictive power of the overall mFI-5 score versus its individual components for esophagectomy outcomes.

Main Methods:

  • Analysis of the National Surgical Quality Improvement Program targeted database (2016-2022).
  • Inclusion of patients undergoing esophagectomy for malignancy.
  • Utilized descriptive analysis, univariable, and multivariable logistic regression, with C-statistics to evaluate predictive accuracy for M/M.

Main Results:

  • A total of 5657 patients were included in the study.
  • The mFI-5 score was significantly associated with M/M in univariate analysis (P<0.0001).
  • An mFI-5 score >2 strongly correlated with postoperative M/M (P=0.0002) in multivariable models, with individual comorbidities showing significant predictive value, except for dependent status.

Conclusions:

  • Frailty, as measured by mFI-5, is associated with poor outcomes in esophagectomy patients.
  • Individual comorbid conditions comprising the mFI-5 are more strongly related to esophagectomy outcomes than the overall frailty score.
  • Further research is recommended to explore alternative measures of physiological frailty for improved prediction.