Abstract
ABSTRACT
Aim
This study investigated nationwide trends, demographic characteristics, and seasonal patterns of rectal prolapse surgery in Japan, using healthcare claims databases.
Methods
Surgical data were extracted from the National Database of Health Insurance Claims (NDB) from 2014 to 2023. Procedures were classified by surgical approach as conventional or laparoscopic. Crude and age‐adjusted rates per 100 000 person‐years were calculated. Temporal trends were assessed using linear and Poisson regression. Seasonal variations (April 2019–March 2024) were evaluated using one‐way analysis of variance with post hoc comparisons, and correlations with meteorological variables were examined using Pearson's correlation coefficients.
Results
Over the decade, a total of 62 407 overall surgeries were performed, with an average annual rate of 4.7 per 100 000 person‐years and an overall female‐to‐male ratio of 6.9:1. Overall surgery rates peaked at ages 85–89 in males (5.5 per 100 000 person‐years) and females (59.1). While age‐adjusted overall and conventional surgeries declined significantly, laparoscopic surgeries significantly increased (all
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Conclusion
This study provides contemporary epidemiological insights into surgical management of rectal prolapse in Japan.