---
title: "height"
description: "Height, or body length, is measured from crown of head to sole of foot."
---

Height, or body length, is measured from crown of head to sole of foot.

**Purpose.** To record the length of the body from crown of head to sole of foot of an individual - either measured or approximated, and either in a standing or recumbent position.

## Source

| Model | Leg | Role |
|---|---|---|
| `openEHR-EHR-OBSERVATION.height.v2` | 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 | — |
| `height_length_magnitude`<br />`height_length_units` | quantity<br />`numeric`, `text` | yes | Height/Length | `/data[at0001]/events[at0002]/data[at0003]/items[at0004]` |
| `comment` | `text` | yes | Comment | `/data[at0001]/events[at0002]/data[at0003]/items[at0018]` |
| `position`<br />`position_code`<br />`position_system`<br />`position_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Position | `/data[at0001]/events[at0002]/state[at0013]/items[at0014]` |
| `confounding_factors` | `text` | yes | Confounding factors | `/data[at0001]/events[at0002]/state[at0013]/items[at0019]` |
| `device` | `uuid` | yes | Device | `/protocol[at0007]/items[at0011]` |

## Constraints

```sql
check ((height_length_magnitude is null and height_length_units is null) or (height_length_magnitude is not null and height_length_units is not null))
check (height_length_magnitude is null or (height_length_units = 'cm' and height_length_magnitude between 0 and 1000) or (height_length_units = '[in_i]' and height_length_magnitude between 0 and 250))
check ((position_code is null and position_system is null and position_valueset_id is null and position is null) or (position is not null and position_code is not null and position_system is not null and position_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 |
| `position_valueset_id, position_code, position_system, position` | [`valueset_code`](/docs/tables/valueset_code) | restrict |
| `device` | [`device`](/docs/tables/device) | no action |

## Indexes

- `height_form_id_idx` on `form_id`
- `height_device_idx` on `device`

## Value sets

| Value set | Codes |
|---|---|
| `org.openehr::openEHR-EHR-OBSERVATION.height.v2/position` | 2 |