Table 7.
Odds ratios (OR) and 95% confidence intervals (95% CI) for association between selected clinical parameters and diagnostic yield of colonoscopy
| Parameter (n) | Diagnostic yield (%) | OR1 (95% CI2) | P |
| Gender | |||
| Female (321) | 26.2 | 1 | - |
| Male (415) | 28 | 1.1 (0.8-1.5) | >0.50 |
| Age (years) | |||
| <50 (472) | 23.9 | 1.0 - | |
| ≥50 (264) | 33 | 1.6 (1.1-2.2) | <0.05 |
| Clinical status | |||
| Outpatient (606) | 25.4 | 1 | - |
| Inpatient (130) | 35.4 | 1.6 (1.1-2.4) | <0.05 |
| Referring clinician | |||
| Other (531) | 23.5 | 1 | - |
| Gastroenterologist (205) | 36.6 | 1.9 (1.3-2.7) | <0.001 |
| Appropriateness of indication3 | |||
| Generally not indicated (149) | 4.7 | 1 | - |
| Not listed (119) | 13.4 | 3.2 (1.3-7.9) | <0.05 |
| Generally indicated (468) | 37.8 | 12.3 (5.7-27.0) | <0.001 |
1
OR, odds ratio.
2
CI, confidence interval.
3
According to 2000 American Society for Gastrointestinal Endoscopy (ASGE) guidelines on appropriate use of gastrointestinal endoscopy[9].