Impact of COVID-19 state of emergency declarations on percutaneous coronary intervention volumes in Japan: a SARIMAX analysis of nationwide DPC database (2018-2021).

ABSTRACT:

Objectives

To evaluate the impact of Japan's COVID-19 state of emergency declarations on percutaneous coronary intervention (PCI) volumes using Seasonal AutoRegressive Integrated Moving Average with eXogenous variables (SARIMAX) modelling. This model offers methodological advantages by: (1) accounting for trends, seasonal variations and autocorrelation; (2) allowing the introduction of policy intervention periods as binary exogenous variables; and (3) enabling an accurate assessment of healthcare impacts during intermittent declaration phases while accounting for periods of subsidence.

Design

Retrospective observational study using a SARIMAX model.

Setting

1377 acute care hospitals participated in Japan's Diagnosis Procedure Combination (DPC) system between April 2018

SUBMITTER: Watanabe F 

PROVIDER: S-EPMC12542588 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature