A retrospective cohort study of cancer incidence among patients treated with radiosynoviorthesis
Bibliographic record
Abstract
Radiosynoviorthesis (RS) is an intra-articular injection of a radioactive colloid for the treatment of synovitis administered most often to patients with rheumatoid arthritis or haemophilia. Although highly cost-effective in comparison with surgical or arthroscopic synovectomy, the risk of cancer associated with this treatment is not well known. We evaluated the incidence of cancer in a group of patients treated with RS. A cohort of 2412 adult patients with a variety of underlying conditions (mainly rheumatoid arthritis) and treated with at least one RS between January 1976 and December 2001, was recruited from two centres in Montréal. Cancer incidence and mortality data for cohort members over that time period were obtained from regulatory agencies using linkage. Background rates for all and specific types of cancer were obtained for the provincial (Québec) and national (Canada) population according to age, gender and calendar period categories. Category-specific rates in the cohort were compared with rates in similar categories from the general population generating standardized incidence ratios (SIR). The effects of specific isotope doses and of number of RS treatments were analysed using a Cox-regression model. No increase in the risk of cancer was observed (SIR 0.96; 95% confidence interval 0.82-1.12). There was no dose-response relationship with the amount of radioisotope administered or number of RS treatments. The study provides some indication for the safety of the procedure but homogenous diagnostic groups of younger patients (such as haemophilic patients) receiving RS will need more evaluation.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".