Cohort studycited by the Tayebat archiveabstract only checked★ key study A-BAR-15 in-depth review

Self-harm emergencies after surgery in Ontario

Self-harm Emergencies After Bariatric Surgery: A Population-Based Cohort Study.

Overview

Bhatti JA et al.. JAMA Surg 2016 · PMID 26444444 · DOI 10.1001/jamasurg.2015.3414

Emergency visits for self-harm rose from 2.33 to 3.63 per 1000 patient-years after surgery.

Does the study support the specific claim? Yes · Methodological quality: moderate

Study explained simply

What did the researchers want to find out?: Self-harm risk
How was the study done?: Self-matched cohort
How many people, animals or samples were studied?: 8815
What was actually found?: Increase after surgery
How large was the observed effect?: RR 1.54
What do the results mean in everyday life?: A rare but real risk, mostly in people with prior mental illness
What are the study's limitations?: No external control
What does it say about Elawady's specific claim?: Supports
Do the results apply to Germany and Europe?: Applicable
What can explicitly not be concluded from this study?: Causation

Authors: Bhatti JA, Nathens AB, Thiruchelvam D, Grantcharov T, Goldstein BI, Redelmeier DA
Journal: JAMA Surg
Year: 2016
Identifier: PMID 26444444 DOI 10.1001/jamasurg.2015.3414
Verification: verified – PubMed E-utilities efetch, 2026-10-25
Retracted: no
Corrections: none
Extent checked: abstract only
Conflicts of interest and funding: COI: not stated in record | Grants: Canadian Institutes of Health Research

Self-harm emergencies before vs after bariatric surgery

Study design: Cohort study – Population-based self-matched (before-after) cohort
Population: Ontario adults undergoing bariatric surgery (98.5% gastric bypass)
Country: Canada
Period: 2006-2011 surgery; 3 years before/after
Sample size: 8815

Results: Self-harm emergencies 3.63 vs 2.33 per 1000 patient-years after vs before, RR 1.54 (1.03-2.30). Higher in >35 years RR 1.76, low income RR 2.09, rural RR 6.49. 72.8% intentional overdose; 93.0% of events in patients with a mental health diagnosis in the 5 years before surgery.
Absolute risks: Absolute increase about 1.3 per 1000 patient-years (3.63 - 2.33, calculated from reported rates)
Authors' conclusion: Risk of self-harm emergencies increased after surgery; screening for suicide risk during follow-up needed.

Supports C-BAR-07.

Applicable.

Correctly cited (EN); AR typo; context on absolute risk missing.

Multidimensional assessment
Multidimensional assessment
Authenticity of the source	verified
Methodological quality	moderate
Risk of bias	some concerns
Precision of results	low
Directness	direct
Reproducibility	replicated
Consistency with the overall evidence	consistent
Regional transferability	moderate
Adequacy of the interpretation (by the archive)	essentially correct but incomplete

Note: according to the archive, the studies were compiled by the archive operators. Whether Dr. Elawady himself cited this study is not established.

What the archive says about the study: Self-harm emergencies rose ~50% after bariatric surgery in 8,815 Ontario adults (3.63 vs 2.33 per 1000 patient-years; RR 1.54).
A. What was actually studied?: Self-harm before vs after
B. What did the authors find?: RR 1.54
C. What conclusions do the authors themselves draw?: Risk increased; screening needed
D. What does the archive derive from it?: Used to document self-harm risk.
E. Is this derivation scientifically justified?: English numbers correct. The Arabic headline contains a typo (3.63 vs 2.63 instead of 2.33). The archive does not mention that 93% of events occurred in patients with prior mental health diagnoses or that absolute rates are low.
Adequacy of the interpretation (by the archive): essentially correct but incomplete