Costs of Colposcopy Services and Their Impact on the Incidence and Mortality Rate of Cervical Cancer in Canada
Bibliographic record
Abstract
OBJECTIVE: Organized cervical cancer screening services consisting of conventional Papanicolaou cervical smears, colposcopy, and related treatment modalities are readily available in all provinces. The purpose of this report was to study the impact of colposcopy usage and costs on cervical cancer incidence and mortality rates in several Canadian provinces. Knowledge of such information is essential before newer technology such as liquid-based cytology and human papillomavirus testing is introduced or replaces the traditional systems used. MATERIALS AND METHODS: The Ministries of Health of five provinces were contacted and asked to furnish information on the number of colposcopic services and fee-for-service costs for these and for cryosurgery, carbon dioxide laser vaporization, loop electrosurgical excisions, and cold-knife conizations for the year 2000. Canadian Cancer Society estimates of incidence and mortality rates for cervical cancer were also obtained. RESULTS: All provinces had similar incidence and mortality rates for cervical cancer; however, the number of colposcopic services on a per-capita basis varied substantially, with Manitoba and Ontario having rates that were approximately two or three times higher. Fee-for-service payments for colposcopy were similar in the Provinces studied but unit costs for surgical treatment services were highest in Ontario and British Columbia. CONCLUSIONS: Although both the incidence and mortality rates for cervical cancer in Canada fell dramatically after the Walton Report in 1976, these rates have plateaued over the past decade despite widespread availability of colposcopy and related ambulatory treatment services. Higher rates of colposcopy usage do not seem to result in lower incidence rates for this disease. Unit costs for colposcopy are similar among the provinces reviewed, but substantial difference exists for certain treatment services. Additional studies are recommended before the widespread introduction or replacement of existing methods with newer, more costly techniques.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| 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".