ArticleCancer medicine2026
Changes in the Age Distribution of Radical Prostatectomy and Radical Cystectomy During the Diffusion of Robot-Assisted Surgery in Japan.
Article in Cancer medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo examine how the age distribution of radical prostatectomy and radical cystectomy changed in Japan during the period in which robot-assisted surgery spread.
methodsWe used the National Database Open Data for fiscal years 2014 to 2024 (Japanese fiscal year, April to March). Procedures were identified by procedure code and classified as robot-assisted or conventional. Rates per 100,000 population were calculated, and the rate in each age group was expressed relative to that in patients aged 70 to 74 years. Cells with fewer than 10 claims are suppressed in the source tables; sensitivity analyses imputed 0, 5 or 9 procedures into these cells.
resultsRadical prostatectomy increased from 20,222 to 29,239 procedures and radical cystectomy from 3545 to 4793. Rates in patients younger than 75 years rose only about 1.2-fold. For prostatectomy, the rate ratio in men aged 75 to 79 years rose from 0.40 to 0.93, while that in men aged 80 to 84 years reached only 0.22. For cystectomy, the ratio in patients aged 80 to 84 years rose from 0.74 to 0.95, while no clear increase was seen in patients aged 85 years or older (0.18 to 0.20, p = 0.791). In men aged 80 years or older, robot-assisted prostatectomy increased from 94 to 1239 procedures, whereas conventional surgery changed from 64 to 97. These findings were unchanged when suppressed cells were imputed as 5 or 9.
conclusionsBetween fiscal years 2014 and 2024, the age distribution of radical prostatectomy and radical cystectomy in Japan shifted toward older patients. The increase was concentrated in men aged 75 to 84 years for prostatectomy and in patients aged 80 to 84 years for cystectomy, and was accounted for mainly by robot-assisted procedures.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.