---
title: "timed_25_foot_walk"
description: "The Timed 25-Foot Walk is a quantitative test of lower extremity mobility and motor function."
---

The Timed 25-Foot Walk is a quantitative test of lower extremity mobility and motor function. It is the first component of the Multiple Sclerosis Functional Composite (MSFC), a series of three tests to document the course of Multiple Sclerosis.

**Purpose.** To record the measurements recorded during a Timed 25-Foot Walk test, normally as part of the Multiple Sclerosis Functional Composite (MSFC) suite of tests.

## Source

| Model | Leg | Role |
|---|---|---|
| `openEHR-EHR-OBSERVATION.timed_25_foot_walk.v1` | openEHR | defines this table |

## Columns

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `form_id` | `uuid` → [`form`](/docs/tables/form) | no | The form this entry was recorded on. | — |
| `form_block_id` | `uuid` | yes | The block within the form, when the entry is bound to one. | — |
| `event_type` | `text` | yes | null represents any_event | — |
| `time` | `interval` | yes | Time | `/data[at0001]/events[at0002]/data[at0003]/items[at0004]` |
| `trial_not_completed` | `boolean` | yes | Trial Not Completed? | `/data[at0001]/events[at0002]/data[at0003]/items[at0005]` |
| `reasons_for_non_completion` | `text` | yes | Reasons For Non-completion | `/data[at0001]/events[at0002]/data[at0003]/items[at0006]` |
| `confounding_factors` | `text` | yes | Confounding Factors | `/data[at0001]/events[at0002]/state[at0009]/items[at0010]` |
| `unilateral_assistive_device`<br />`unilateral_assistive_device_code`<br />`unilateral_assistive_device_system`<br />`unilateral_assistive_device_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Unilateral Assistive Device | `/protocol[at0011]/items[at0012]` |
| `bilateral_assistive_device`<br />`bilateral_assistive_device_code`<br />`bilateral_assistive_device_system`<br />`bilateral_assistive_device_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Bilateral Assistive Device | `/protocol[at0011]/items[at0020]` |
| `more_than_two_attempts` | `boolean` | yes | More Than Two Attempts? | `/protocol[at0011]/items[at0017]` |
| `reasons_for_more_than_two_attempts` | `text` | yes | Reasons For More Than Two Attempts | `/protocol[at0011]/items[at0018]` |

## Constraints

```sql
check ((unilateral_assistive_device_code is null and unilateral_assistive_device_system is null and unilateral_assistive_device_valueset_id is null) or (unilateral_assistive_device is not null and unilateral_assistive_device_code is not null and unilateral_assistive_device_system is not null and unilateral_assistive_device_valueset_id is not null))
check ((bilateral_assistive_device_code is null and bilateral_assistive_device_system is null and bilateral_assistive_device_valueset_id is null) or (bilateral_assistive_device is not null and bilateral_assistive_device_code is not null and bilateral_assistive_device_system is not null and bilateral_assistive_device_valueset_id is not null))
```

## Unique

- `form_block_id`

## References

| Columns | Target | On delete |
|---|---|---|
| `form_id` | [`form`](/docs/tables/form) | cascade |
| `form_id, form_block_id` | [`form_block`](/docs/tables/form_block) | cascade |
| `unilateral_assistive_device_valueset_id, unilateral_assistive_device_code, unilateral_assistive_device_system, unilateral_assistive_device` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `bilateral_assistive_device_valueset_id, bilateral_assistive_device_code, bilateral_assistive_device_system, bilateral_assistive_device` | [`valueset_code`](/docs/tables/valueset_code) | restrict |

## Indexes

- `timed_25_foot_walk_form_id_idx` on `form_id`

## Value sets

| Value set | Codes |
|---|---|
| `org.openehr::openEHR-EHR-OBSERVATION.timed_25_foot_walk.v1/bilateral_assistive_device` | 4 |
| `org.openehr::openEHR-EHR-OBSERVATION.timed_25_foot_walk.v1/unilateral_assistive_device` | 3 |