Bibliographic record
Abstract
Colorectal cancer (CRC) screening has come of age in Canada, with every province now having a screening program either implemented or well underway. These programs are based on the detection of fecal occult blood, with positive results triggering colonoscopy for definitive diagnosis. This approach is supported by high-level evidence demonstrating a mortality benefit for individuals screened in this manner. Fecal occult blood testing (FOBT) uses indirect methods to test for the presence of hemoglobin, which can be affected by chemicals, such as vitamin C, or heme from other sources such as red meat. In contrast, fecal immunochemical tests (FIT) use an antibody to detect human globin directly. These assays may offer advantages of greater specificity and sensitivity, and improved adherence. Most FITs produce a visual colour change on a strip to indicate a positive result, but some are analyzed using automated systems in a laboratory to provide a quantitative result.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.008 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.004 | 0.002 |
| Scholarly communication | 0.002 | 0.004 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.008 | 0.015 |
| Insufficient payload (model declined to judge) | 0.054 | 0.022 |
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".