Primary sources behind every figure.
Every statistic on this site linked to a primary source. No vendor-blog round-trips. Reviewed quarterly.
The $150 billion figure
No-Show Rates and Direct Financial Impact on Ambulatory Care
2018Redesigning Care to Meet Capacity and Access Demands
2022No-show rates in healthcare
No-show rates at outpatient appointments in the United States: systematic review
2018Association of Appointment No-Shows with Patient and Healthcare Outcomes
2022Why do patients not attend their appointments? Causes and solutions
2016Behavioral health no-show rates
Patient non-attendance at out-patient clinics: a systematic review
2018Why don't patients attend their appointments?
2007Predictors of no-show behavior at VA PTSD clinics
2013SMS and reminder effectiveness
The Effectiveness of Electronic Reminders to Improve Medication Adherence and Appointment Attendance in Ambulatory Care
2011Text Message Appointment Reminders to Reduce No-Shows
2018Effectiveness of Mobile Text Messaging for Appointment Reminders
2012Patient outcomes: beyond revenue
Missed appointments and risk of death: cohort study
2019Restaurant and hospitality
OpenTable Restaurant Industry Report 2023
2023Salon and beauty
Phorest Salon Software Industry Report 2023
2023MGMA financial benchmarks
MGMA DataDive Cost and Revenue Survey 2024
2024Methodology notes
We prioritize peer-reviewed literature, professional association surveys (MGMA, AMA), and verified industry reports (OpenTable, Phorest). Vendor-produced data is cited only when no independent source exists and the methodology is disclosed.
MGMA DataDive is paywalled. We cite the publicly available summaries and validated figures that MGMA has published in accessible formats (conference presentations, press releases) or that have been independently replicated.
This citation archive is reviewed quarterly. Last update: April 2026. New data sources are added as they are published. Outdated statistics are flagged and replaced.