NCT04890496

Brief Summary

The real-world electronic health records (EHR) were derived from the hospitalization of Zhongshan Ophthalmic Center (ZOC) of Sun Yat-sen University from 1998-2020 to investigate the ophthalmology diagnosis and treatment activities.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
560,000

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Mar 2021

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 18, 2021

Completed
Same day until next milestone

Study Start

First participant enrolled

March 18, 2021

Completed
14 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2021

Completed
2 months until next milestone

First Posted

Study publicly available on registry

May 18, 2021

Completed
8 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 30, 2021

Completed
Last Updated

May 18, 2021

Status Verified

May 1, 2021

Enrollment Period

14 days

First QC Date

March 18, 2021

Last Update Submit

May 16, 2021

Conditions

OphthalmologyHospitalization

Outcome Measures

Primary Outcomes (1)

  • The prevalence of primary diagnosis

    calculate the prevalence of the primary diagnosis of inpatient visits

    baseline

Secondary Outcomes (3)

  • The prevalence of secondary diagnosis

    baseline

  • Demographics

    baseline

  • costs of inpatient visits

    baseline

Study Arms (1)

inpatients of ZOC

Patients have retrospective hopitalization record of ZOC from 1998 to 2020.

Eligibility Criteria

Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Patients have retrospective inpatient records of ZOC from 1998 to 2020.

You may qualify if:

  • have retrospective inpatient records of ZOC from 1998 to 2020

You may not qualify if:

  • Demographic data missing
  • Diagnosis data missing

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Zhongshan Ophthalmic Center, Sun Yat-sen Univerisity

Guangzhou, Guangdong, 510060, China

RECRUITING

Study Officials

  • Haotian Lin, Ph.D, M.D.

    Zhongshan Ophthalmic Center, Sun Yat-sen Univerisity

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Haotian Lin, Ph.D, M.D.

CONTACT

+86-020-87330274gddlht@aliyun.com

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

March 18, 2021

First Posted

May 18, 2021

Study Start

March 18, 2021

Primary Completion

April 1, 2021

Study Completion

December 30, 2021

Last Updated

May 18, 2021

Record last verified: 2021-05

Locations

CN(1)