ArticleSurgery2015
The "weekend effect" in urgent general operative procedures.
Article in Surgery, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 2 of them syntheses that pooled 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.
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
38 citing papers in PubMed, 2 syntheses or guidelines pooled it, 90 citations in OpenAlex.
- Magnitude and modifiers of the weekend effect in hospital admissions: a systematic review and meta-analysis.BMJ open · 2019Pooled it
- Weekend Surgical Care and Postoperative Mortality: A Systematic Review and Meta-Analysis of Cohort Studies.Medical care · 2018Pooled it
- Compliance with preoperative antibiotic prophylaxis in cesarean delivery and its impact on surgical site infections: A national retrospective study of Jordan.Global health research and policy · 2026Article
- Patient and medical choice across public and private health providers: the case of birth timing manipulation in Brazil.The European journal of health economics : HEPAC : health economics in prevention and care · 2026Article
- Endoscopic treatment outcomes for foreign body extraction from alimentary tract: a 15-year experience of 1,162 cases in Southern China.Frontiers in medicine · 2026Article
- On Patient Safety: The Weekend Effect.Clinical orthopaedics and related research · 2025Article
- Postoperative Outcomes Following Preweekend Surgery.JAMA network open · 2025Article
- Comparison of perioperative outcomes between colorectal operations performed on weekends vs those performed on weekdays.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2024Article
- Prognostic factors and predictive models in hot gallbladder surgery: A prospective observational study in a high-volume center.Annals of hepato-biliary-pancreatic surgery · 2024Article
- Patients Expect the Same Quality of Round-the-Clock Surgical Care.Korean circulation journal · 2024Article
- The "Weekday Effect"-Does It Impact Esophageal Cancer Surgery Outcomes?Journal of gastrointestinal cancer · 2023Article
- ASO Author Reflections: Safety of Elective Esophagectomy Performed on Weekend for Patients with Esophageal Carcinoma.Annals of surgical oncology · 2023Article
- Impact of Weekend Effect on Short- and Long-Term Survival of Patients Undergoing Esophagectomy for Cancer: A Population-Based, Inverse Probability of Treatment-Weighted Analysis.Annals of surgical oncology · 2023Article
- The weekend effect in aneurysmal subarachnoid haemorrhage: a single centre experience and review.Neurosurgical review · 2023Article
- The "weekend effect" does not impact on outcome of trauma laparotomy - Experience from a level 1 trauma centre in New Zealand.Chinese journal of traumatology = Zhonghua chuang shang za zhi · 2023Article
- The weekend effect on the provision of Emergency Surgery before and during the COVID-19 pandemic: case-control analysis of a retrospective multicentre database.World journal of emergency surgery : WJES · 2022Article
- [Retinal detachment surgery: trends over 15 years].Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft · 2022Article
- The urgency of surgical treatment for rhegmatogenous retinal detachment.Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft · 2021Review
- Impact of the acute care surgery model on resident operative experience in emergency general surgery.Canadian journal of surgery. Journal canadien de chirurgie · 2021Article
- Retrospective Analysis of Esophageal Foreign Body Ingestion: Differences Among Weekday, Weekends, and Holidays.Risk management and healthcare policy · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundThere is growing concern that the quality of inpatient care may differ on weekends versus weekdays. We assessed the "weekend effect" in common urgent general operative procedures.
methodsThe Healthcare Cost and Utilization Project Florida State Inpatient Database (2007-2010) was queried to identify inpatient stays with urgent or emergent admissions and surgery on the same day. Included were patients undergoing appendectomy, cholecystectomy for acute cholecystitis, and hernia repair for obstructed/gangrenous hernia. Outcomes included duration of stay, inpatient mortality, hospital-adjusted charges, and postoperative complications. Controlling for hospital and patient characteristics and type of surgery, we used multilevel mixed-effects regression modeling to examine associations between patient outcomes and admissions day (weekend vs weekday).
resultsA total of 80,861 same-day surgeries were identified, of which 19,078 (23.6%) occurred during the weekend. Patients operated on during the weekend had greater charges by $185 (P < .05), rates of wound complications (odds ratio [OR] 1.29, 95% confidence interval [95% CI] 1.05-1.58; P < .05), and urinary tract infection (OR 1.39, 95% CI 1.05-1.85; P < .05). Patients undergoing appendectomy had greater rates of transfusion (OR 1.43, 95% CI 1.09-1.87; P = .01), wound complications (OR 1.32, 95% CI 1.04-1.68; P < .05), urinary tract infection (OR 1.76, 95% CI 1.17-2.67; P < .01), and pneumonia (OR 1.41, 95% CI 1.05-1.88; P < .05). Patients undergoing cholecystectomy had a greater duration of stay (P = .001) and greater charges (P = .003).
conclusionPatients undergoing weekend surgery for common, urgent general operations are at risk for increased postoperative complications, duration of stay, and hospital charges. Because the cause of the "weekend effect" is still unknown, future studies should focus on elucidating the characteristics that may overcome this disparity.
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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.