P3848Baseline profile of patients treated for acute venous thromboembolism (VTE) in routine clinical practice according to VTE location in the RE-COVERY DVT/PE global cohort study
Bibliographic record
Abstract
Abstract Background In contrast to randomized clinical trials, observational studies provide the opportunity to evaluate routine practice in real-world patient populations. Purpose Using data from the RE-COVERY DVT/PE global observational study (enrollment January 2016 to May 2017), we have explored patient characteristics and anticoagulant treatment patterns in subgroups defined according to the type and location (proximal or distal lower limb) of acute venous thromboembolism (VTE). Methods Baseline patient characteristics, details of hospitalization and choice of anticoagulant therapy were tabulated descriptively for three groups of patients according to the type and location of their index VTE: pulmonary embolism (PE) (± any deep vein thrombosis; DVT); proximal (± distal) lower limb DVT, including the iliac vein; or distal lower limb DVT. Anticoagulant therapy at baseline and at hospital discharge or 14 days after diagnosis (whichever was later) was recorded. Results Of the 6122 eligible patients, 324 who had DVT at locations other than the lower limb and no PE were excluded from this analysis (as a key objective was to compare subgroups with DVT in the lower extremities according to whether the location was distal alone or involved the proximal segment). The remaining 5798 patients had either distal DVT (17.7%), proximal (± distal) DVT (40.0%) or PE (± any DVT) (42.3%) (Table). The likelihood of being diagnosed in an emergency department and of being hospitalized for VTE increased in line with the seriousness of the index event (distal DVT to PE). There were corresponding increases in age and the proportion of patients with comorbidities and/or medical history such as hypertension, diabetes mellitus or active cancer across these subgroups. At the time of hospital discharge or 14 days after diagnosis, whichever was later, non-vitamin K antagonist oral anticoagulants were the most commonly used anticoagulants (53% of patients in the PE group and 55–56% in the two DVT groups). The use of parenteral anticoagulant therapy alone appeared to be lower in the PE group than in the DVT groups, but the total use of parenteral therapy (alone or prior to oral anticoagulation) increased across groups from distal DVT (67%) to proximal DVT (74%) to PE (79%). Conclusion These data provide an insight into the potential differences in patient characteristics and treatment patterns among patients with PE, proximal/iliac lower limb DVT or distal lower limb DVT. Acknowledgement/Funding Funded by Boehringer Ingelheim
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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 | 0.000 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".