# TROUT Index

> Medical tool for assessing adverse outcomes in older adults post-injury based on frailty. (iPhone/iPad app by Edward Vendrow.)

- Source: https://appshunter.io/ios/app/trout-index/id1582284838 (this page in markdown: same URL + `.md`)
- Developer: [Edward Vendrow](https://appshunter.io/developer/1553335805)
- Category: Medical
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 12+
- Requires: iOS 14.1 · 1 MB
- Languages: English
- Released: 2021-09-21
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/trout-index/id1582284838/reviews.md

## What is TROUT Index?

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.

## Key features

- Prognosticate adverse outcomes after injury
- Assess frailty risk in older adults
- Quantify frailty risk levels (low, moderate, high)
- Output population-level outcome estimates
- Supplement clinical management decisions


## Frequently asked questions about TROUT Index

### What is TROUT Index used for?

TROUT Index is used to rapidly prognosticate key adverse outcomes after injury among older adults by assessing baseline frailty. It quantifies frailty risk and provides population-level estimates of outcomes.

### Is TROUT Index free to use?

Yes, TROUT Index is available for free.

### What devices does TROUT Index support?

TROUT Index is supported on iPhone and iPod devices.

### What is the age rating for TROUT Index?

The age rating for TROUT Index is 12+.

### When was TROUT Index last updated?

TROUT Index was last updated on September 23, 2021, with version 1.1.

### Does TROUT Index require a doctor's advice?

Yes, the app disclaimer states that predicted risk should supplement, not replace, management decisions, and users should seek a doctor's advice before making any medical decisions.

### How accurate is TROUT Index?

TROUT Index has a rating of 5.0 stars from 1 rating, indicating high user satisfaction with its functionality.

### Does TROUT Index have ads?

No, TROUT Index does not contain advertisements.

## Version history (last 2 releases)

### 1.1 — 2021-09-23

- Updated source citation

### 1.0 — 2021-09-21

No release notes.

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## More apps by Edward Vendrow

- [Burn Area](https://appshunter.io/ios/app/burn-area/id1553335803)
- [RFF Index](https://appshunter.io/ios/app/rff-index/id1557635049)

All apps by Edward Vendrow: https://appshunter.io/developer/1553335805

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*