Prevalence of multimorbidity and its associations with hospitalisation or death in Japan 2014-2019: a retrospective cohort study using nationwide medical claims data in the middle-aged generation.

ABSTRACT:

Objective

To describe the prevalence of multimorbidity and its associations with clinical outcomes across age groups.

Design

Retrospective cohort study using nationwide medical claims data.

Setting

Carried out in Japan between April 2014 and March 2019.

Participants

N=246 671 Japanese individuals aged 20-74 enrolled in the health insurance were included into the baseline data set for fiscal year (FY) 2014. Of those, N=181 959 individuals were included into the cohort data set spanning FY2014-FY2018.

Exposures

Multimorbidity was defined as having ≥2 of 15 chronic conditions according to the International Classification of Diseases 10th Revision codes of the Charlson Comorbidity Index.

Primary and secondary outcomes

Primary outcome: the standardised

SUBMITTER: Saito Y 

PROVIDER: S-EPMC10173978 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature