Relative risk of sigmoidoscopy limitations by patient age and sex
| Characteristic | Limitation | |||||
|---|---|---|---|---|---|---|
| Spasm/pain | Stool | Angulation | ||||
| RR* | 95% CI | RR* | 95% CI | RR* | 95% CI | |
| CI, confidence interval; RR, relative risk. | ||||||
| *Also adjusted for endoscopist specialty, family history of colorectal cancer, and history of prior sigmoidoscopy. | ||||||
| Age (y) | ||||||
| 50–59 | 1.0 | Ref. | 1.0 | Ref. | 1.0 | Ref. |
| 60–69 | 1.0 | 1.0–1.1 | 1.2 | 1.1–1.2 | 1.1 | 1.0–1.1 |
| 70–79 | 1.1 | 1.1–1.2 | 1.5 | 1.4–1.6 | 1.2 | 1.1–1.3 |
| 80+ | 1.3 | 1.2–1.5 | 2.3 | 2.0–2.5 | 1.5 | 1.3–1.7 |
| Sex | ||||||
| Male | 1.0 | Ref. | 1.0 | Ref. | 1.0 | Ref. |
| Female | 2.2 | 2.1–2.3 | 0.8 | 0.8–0.8 | 2.2 | 2.1–2.3 |