Short‐term outcomes of endometriosis surgery in Ontario: A population‐based cohort study
Bibliographic record
Abstract
INTRODUCTION: Our objective was to compare the short-term outcomes by type of surgical management of endometriosis in Ontario, Canada and to characterize the population of women undergoing surgical management of endometriosis. MATERIAL AND METHODS: We conducted a population-based cohort study including women aged 18-50 years undergoing same-day or inpatient surgery for endometriosis from 1 April 2002 through 31 March 2018. Surgery was classified as minimally invasive hysterectomy (MIH), total abdominal hysterectomy (TAH) or minor or major conservative (uterus-preserving) surgery. Outcomes examined included length of stay, intraoperative complications, postoperative complications, emergency department visits, ambulatory care visits, and readmission. We estimated the relative risk of these outcomes in minor, major conservative surgery and TAH vs MIH adjusted for age, income quintile, parity, and comorbidities. RESULTS: A total of 85 605 patients underwent surgery, 12.9% MIH, 22.1% TAH, 36.3% major conservative, and 28.6% minor conservative. The mean age at index surgery was 37.6 ± 7.7 years. Before surgery, 70.6% of patients had visited a physician for pain at least once (64.7% MIH, 69.5% TAH, 71.1% major conservative and 73.4% minor conservative) and 23.5% of patients had sought infertility consultation (5.7% MIH, 6.6% TAH, 29.3% major conservative and 37.1% minor conservative). The overall risk of intraoperative and postoperative complications was 1.5% and 4.7%, respectively. In adjusted models, compared with those undergoing minor conservative surgery, those having major conservative surgery were 1.77 (95% CI 1.49-2.11) times as likely to experience an intraoperative complication, those having MIH and TAH were 2.55 (95% CI 2.08-3.13) and 2.34 (95% CI 1.93-2.82) times as likely to do so, respectively. Similarly, compared with those undergoing minor conservative surgery, those having major conservative surgery were 2.60 (95% CI 2.30, 2.93) times as likely to experience any postoperative complication, and those having MIH and TAH were 4.69 (95% CI 4.11-5.36) and 5.38 (95% CI 4.76-6.09) times as likely to do so, respectively. CONCLUSIONS: Approximately one-third of patients undergoing surgical management for endometriosis in Ontario between 2002 and 2018 had a hysterectomy. Overall, complications following surgery were low, and dependent on extent of surgery. These results should help to inform preoperative counseling for patients and health policy development for providers.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".