---
title: "PATCH /observation_period"
method: PATCH
path: "/observation_period"
tags: ["observation_periodController"]
---

# PATCH /observation_period

`PATCH /observation_period`

## Request body

- ObservationPeriodPartial — (tsType: Partial<observation_period>, schemaOptions: { partial: true })
  - `observation_period_id` number
  - `person_id` number
  - `observation_period_start_date` string, date-time
  - `observation_period_end_date` string, date-time
  - `period_type_concept_id` number

## Response `200`

Count of observation_period models updated

- LoopbackCount
  - `count` number

---

[API](https://skmtc.net/ohdsi/apis/data-connection.md) · [All operations](https://skmtc.net/ohdsi/apis/data-connection/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ohdsi/data-connection/revisions/b5ead99a1d44/schema)