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The TROUT Index was developed to rapidly prognosticate key adverse outcomes after injury among older adults using baseline frailty. The TROUT Index quantifies an individual's frailty risk (low, moderate, high) and outputs population-level estimates of outcomes base on baseline frailty.

Disclaimer: Predicted risk should supplement, not replace, management decisions, which should be provider and hospital-specific. Please seek a doctor's advice before making any medical decisions.

What’s New

Version 1.1

- Updated source citation

App Privacy

The developer, Edward Vendrow, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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