Diagnostic Codes for Esotropia Incidence and Surgery Trends in Japan, 2014-2019

A dataset of annual incidence rates and surgery counts for esotropia in Japan from 2014 to 2019. It contains figures derived from the National Database of Health Insurance Claims and Specific Health Checkups of Japan, covering nearly the entire population. The data was authored by Saori Wada and published on figshare in April 2026.

Use Cases

• Analyze the correlation between esotropia incidence and smartphone penetration based on the annual rates and penetration data mentioned.
• Model the temporal trend of esotropia diagnoses based on the six-year time series from 2014 to 2019.
• Investigate the relationship between diagnosis rates and surgical intervention volumes based on the provided counts of strabismus surgeries.
• Conduct an ecological study on population-level health outcomes using the nationwide, insurance-claims-based data source described.

Strengths

• Data is derived from a nationwide database covering almost the entire Japanese population, suggesting high coverage.
• Includes specific annual incidence rates with 95% confidence intervals (e.g., 32.26 to 36.61 per 100,000 person-years).
• Provides a six-year time series (2014-2019) for analyzing trends.
• Correlates health outcomes with an external factor (smartphone household penetration), with a reported significant correlation (r=0.943).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset is very small (5.5 KB), indicating limited scope and likely aggregated summary statistics rather than patient-level records.

Provenance

Source

National Database of Health Insurance Claims and Specific Health Checkups of Japan.

Collection Method

Nationwide population-based cohort study counting newly diagnosed cases and surgeries from insurance claims.

Time Range

2014 to 2019

Freshness

Last updated 2026-04-22 17:31:38; freshness should be verified.

Geography

Japan