# Establishment and Validation of Early-warning Model of Perioperative Pain for the Elders

> **NCT04228705** · — · UNKNOWN · sponsor: **Peking University People's Hospital** · enrollment: 6000 (estimated)

## Conditions studied

- Postoperative Pain
- Pain Assessment
- Elderly
- Model

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04228705
- **Lead sponsor:** Peking University People's Hospital
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2019-12-13
- **Primary completion:** 2020-12-12
- **Final completion:** 2020-12-12
- **Target enrollment:** 6000 (ESTIMATED)
- **Last updated:** 2020-01-14

## Collaborators

- [object Object]
- [object Object]
- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04228705

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04228705, "Establishment and Validation of Early-warning Model of Perioperative Pain for the Elders". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT04228705. Licensed CC0.

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