Journal article
Consistency of Daily Number of Reported COVID-19 Cases in 191 Countries From 2020 to 2022: Comparative Analysis of 2 Major Data Sources
JMIR public health and surveillance, Vol.11, pp.e65439-e65439
01/01/2025
DOI: 10.2196/65439
PMCID: PMC11825895
PMID: 39927619
Abstract
The COVID-19 pandemic represents one of the most challenging public health emergencies in recent world history, causing about 7.07 million deaths globally by September 24, 2024. Accurate, timely, and consistent data are critical for early response to situations like the COVID-19 pandemic.
This study aimed to evaluate consistency of daily reported COVID-19 cases in 191 countries from the Johns Hopkins University Center for Systems Science and Engineering (JHU CSSE) and the World Health Organization (WHO) dashboards during 2020-2022.
We retrieved data concerning new daily COVID-19 cases in 191 countries covered by both data sources from January 22, 2020, to December 31, 2022. The ratios of numbers of daily reported cases from the 2 sources were calculated to measure data consistency. We performed simple linear regression to examine significant changes in the ratio of numbers of daily reported cases during the study period.
Of 191 WHO member countries, only 60 displayed excellent data consistency in the number of daily reported COVID-19 cases between the WHO and JHU CSSE dashboards (mean ratio 0.9-1.1). Data consistency changed greatly across the 191 countries from 2020 to 2022 and differed across 4 types of countries, categorized by income. Data inconsistency between the 2 data sources generally decreased slightly over time, both for the 191 countries combined and within the 4 types of income-defined countries. The absolute relative difference between the 2 data sources increased in 84 countries, particularly for Malta (R2=0.25), Montenegro (R2=0.30), and the United States (R2=0.29), but it decreased significantly in 40 countries.
The inconsistency between the 2 data sources warrants further research. Construction of public health surveillance and data collection systems for public health emergencies like the COVID-19 pandemic should be strengthened in the future.
Details
- Title: Subtitle
- Consistency of Daily Number of Reported COVID-19 Cases in 191 Countries From 2020 to 2022: Comparative Analysis of 2 Major Data Sources
- Creators
- Han Liu - Central South UniversityHuiying Zong - Department of Medical Records Management, Xiangya Hospital, Changsha, ChinaYang Yang - University of GeorgiaDavid C Schwebel - University of Alabama at BirminghamBin Xie - Central South UniversityPeishan Ning - Central South UniversityZhenzhen Rao - Central South UniversityLi Li - Central South UniversityGuoqing Hu - Central South University
- Resource Type
- Journal article
- Publication Details
- JMIR public health and surveillance, Vol.11, pp.e65439-e65439
- DOI
- 10.2196/65439
- PMID
- 39927619
- PMCID
- PMC11825895
- NLM abbreviation
- JMIR Public Health Surveill
- ISSN
- 2369-2960
- eISSN
- 2369-2960
- Language
- English
- Date published
- 01/01/2025
- Academic Unit
- Research Administration
- Record Identifier
- 9984949458902771
Metrics
2 Record Views