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Two by two table of faecal haemoglobin (index test) results versus colonoscopy (reference standard) for detection of advanced colorectal neoplasia
| Advanced colorectal neoplasia | Faecal haemoglobin result | Total | |
|---|---|---|---|
| Positive | Negative | ||
| Present | 9 | 20 | 29 |
| Absent | 19 | 181 | 200 |
| Total | 28 | 201 | 229 |
