COVID-19 Recovery Study II

Long-term symptoms, complications and social outcomes after COVID-19: a retrospective cohort study using a self-administered questionnaire - CORES II

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000047779

Enrollment

1000

Registered

2022-06-01

Start date

2022-06-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Persons diagnosed with COVID-19 at a medical institution, etc. (2) Persons 20 years of age or older who were hospitalized and discharged alive from a cooperative research institute in Japan between April and September 2021 for the treatment of 1 above.

Exclusion criteria

Exclusion criteria: (1) Persons deemed unfit by the physician (e.g., patients who have difficulty communicating in Japanese or cooperating in surveys)

Design outcomes

Primary

Measure	Time frame
Presence of long-term symptoms and complications at one year and two years after diagnosis	—

Secondary

Measure	Time frame
Physical and mental health status, socioeconomic status, and quality of life at one year and two years after diagnosis	—

Countries

Japan

Contacts

Public ContactMariko Hosozawa

Japan Institute for Health Security Institute for Global health Policy Research, Bureau of Global Health Cooperation

hosozawa.m@jihs.go.jp03-3202-7181

Outcome results