---
title: "substance_use_screening"
description: "Series of questions and associated answers to screen for use of any substances or a specific grouping, class or individual substance/s that may harm an individual's health or soci…"
---

Series of questions and associated answers to screen for use of any substances or a specific grouping, class or individual substance/s that may harm an individual's health or social well-being.

**Purpose.** To record a framework for documenting answers to pre-defined screening questions about the use of any substances or a specific grouping, class or individual substance/s that may harm an individual's health or social well-being.

## Source

| Model | Leg | Role |
|---|---|---|
| `openEHR-EHR-OBSERVATION.substance_use_screening.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. | — |
| `screening_purpose`<br />`screening_purpose_code`<br />`screening_purpose_system`<br />`screening_purpose_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Screening purpose | `/data[at0022]/events[at0023]/data[at0001]/items[at0040]` |
| `any_substance_use` | `boolean` | yes | Any substance use? | `/data[at0022]/events[at0023]/data[at0001]/items[at0052]` |
| `description` | `text` | yes | Description | `/data[at0022]/events[at0023]/data[at0001]/items[at0042]` |
| `overall_comment` | `text` | yes | Overall comment | `/data[at0022]/events[at0023]/data[at0001]/items[at0056]` |

## Constraints

```sql
check ((screening_purpose_code is null and screening_purpose_system is null and screening_purpose_valueset_id is null) or (screening_purpose is not null and screening_purpose_code is not null and screening_purpose_system is not null and screening_purpose_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 |
| `screening_purpose_valueset_id, screening_purpose_code, screening_purpose_system, screening_purpose` | [`valueset_code`](/docs/tables/valueset_code) | restrict |

## Referenced by

- [`substance_use_screening_specific_substance`](/docs/tables/substance_use_screening_specific_substance) via `substance_use_screening_id`

## Indexes

- `substance_use_screening_form_id_idx` on `form_id`

## Child tables

1 table hang off `substance_use_screening`, one row per repetition.

### `substance_use_screening_specific_substance`

Child table — one row per repetition, deleted with its parent.

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `substance_use_screening_id` | `uuid` → [`substance_use_screening`](/docs/tables/substance_use_screening) | no | — | — |
| `position` | `integer` | no | Order of this row within its parent, from zero. | — |
| `substance_name`<br />`substance_name_code`<br />`substance_name_system`<br />`substance_name_valueset_id` | coded text<br />`text`, `text`, `text`, `text` | yes | Substance name | `/data[at0022]/events[at0023]/data[at0001]/items[at0026]/items[at0021]` |
| `used` | `boolean` | yes | Used? | `/data[at0022]/events[at0023]/data[at0001]/items[at0026]/items[at0024]` |
| `last_used` | `timestamptz` | yes | Last used | `/data[at0022]/events[at0023]/data[at0001]/items[at0026]/items[at0003]` |
| `timing` | `timestamptz` | yes | Timing | `/data[at0022]/events[at0023]/data[at0001]/items[at0026]/items[at0002]` |
| `comment` | `text` | yes | Comment | `/data[at0022]/events[at0023]/data[at0001]/items[at0026]/items[at0025]` |

#### Constraints

```sql
check ((substance_name_code is null and substance_name_system is null and substance_name_valueset_id is null) or (substance_name is not null and substance_name_code is not null and substance_name_system is not null and substance_name_valueset_id is not null))
```

#### Unique

- `substance_use_screening_id, position`

#### References

| Columns | Target | On delete |
|---|---|---|
| `substance_use_screening_id` | [`substance_use_screening`](/docs/tables/substance_use_screening) | cascade |
| `substance_name_valueset_id, substance_name_code, substance_name_system, substance_name` | [`valueset_code`](/docs/tables/valueset_code) | restrict |