Evidence map›Paper›PMID 33652152›Full record

ArticleClinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association2022

Epidemiologic and Economic Burden of Achalasia in the United States.

Charles E Gaber, Swathi Eluri, Cary C Cotton, Paula D Strassle, Timothy M Farrell, Jennifer L Lund, Evan S Dellon

Abstract read
In one paragraph

Article in Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Utilization trends for esophageal motility testing in the United States.Diseases of the esophagus : official journal of the International Society for Diseases of the Esophagus · 2026
    Article
  5. Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Patient-Reported Outcome Measures in Benign Esophageal Disorders.The American journal of gastroenterology · 2025
    Review
  14. Review
  15. Prevalence and Costs of Eosinophilic Esophagitis in the United States.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2025
    Article
  16. Article
  17. Review
  18. Two onset types of achalasia and the long-term course to diagnosis.Esophagus : official journal of the Japan Esophageal Society · 2024
    Article
  19. Prevalence and Costs of Esophageal Strictures in the United States.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2024
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Charles E GaberDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
Swathi EluriDepartment of Medicine, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
Cary C CottonDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Department of Medicine, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
Paula D StrassleDepartment of Surgery, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
Timothy M FarrellDepartment of Surgery, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
Jennifer L LundDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
Evan S DellonDepartment of Medicine, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina. Electronic address: edellon@med.unc.edu.

Funding

PILOT AND FEASIBILITY STUDIESP30DK034987 · NIDDK · UNIV OF NORTH CAROLINA CHAPEL HILL · PI ROBERT S. SANDLER · 1985 to 2026
$30.5M
DIGESTIVE DISEASES EPIDEMIOLOGY TRAINING PROGRAMT32DK007634 · NIDDK · UNIV OF NORTH CAROLINA CHAPEL HILL · PI ROBERT S. SANDLER · 1990 to 2026
$7.4M
NIDDK NIH HHS P30 DK034987NIDDK NIH HHS T32 DK007634
6 · The paper itself

Abstract

BACKGROUND &

aimsAchalasia is a debilitating chronic condition of the esophagus. Currently there are no national estimates on the epidemiologic and economic burden of disease. We sought to estimate trends in incidence and prevalence of achalasia by age-sex strata, and to estimate the total direct medical costs attributed to achalasia in the United States.

methodsWe conducted a cohort study using two administrative claims databases: IBM MarketScan Commercial Claims and Encounters database (2001-2018; age <65) and a 20% sample of nationwide Medicare enrollment and claims (2007-2015; age ≥65). Point prevalence was calculated on the first day of each calendar year; the incidence rate captured new cases developed in the ensuing year. Utilization rates of healthcare services and procedures were reported. Mean costs per patient were calculated and standardized to the corresponding U.S. Census Bureau population data to derive achalasia-specific total direct medical costs.

resultsThe crude prevalence of achalasia per 100,000 persons was 18.0 (95% CI, 17.4, 18.7) in MarketScan and 162.1 (95% CI, 157.6, 166.6) in Medicare. The crude incidence rate per 100,000 person-years was 10.5 (95% CI, 9.9, 11.1) in MarketScan and 26.0 (95% CI, 24.9, 27.2) in Medicare. Incidence and prevalence increased substantially over time in the Medicare cohort, and increased with more advanced age in both cohorts. Utilization of achalasia-specific healthcare was high; national estimates of total direct medical costs exceeded $408 million in 2018.

conclusionsAchalasia has a higher epidemiologic and economic burden in the US than previously suggested, with diagnosis particularly increasing in older patients.

Indexed as

Esophageal AchalasiaAgedCohort StudiesFinancial StressHealth Care CostsHumansMedicareRetrospective StudiesUnited StatesAchalasiaCostEpidemiologyIncidencePrevalence

Identifiers

PMID33652152
PMCPMC8390595

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.