Table 2.
Odds ratios [95% confidence interval (CI)] from binary, unconditional crude, and multivariable (adjusted) logistic regression analysis for fecal occult blood test (FOBT) and colonoscopy in District of Columbia (DC).
| Characteristic | Level | Crude | Adjusted model | ||
|---|---|---|---|---|---|
| FOBT | Sigmoid/colonoscopy | FOBT | Sigmoid/colonoscopy | ||
| Age (y) | 50–64 | 1 | 1 | 1 | 1 |
| 65–74 | 1.4 (1.2, 1.7)* | 2.3 (1.9, 2.7)* | 1.6 (1.4, 1.9)* | 2.6 (2.2, 3.0)* | |
| ⩾75 | 1.1 (0.9, 1.4) | 1.6 (1.4, 1.9)* | 1.4 (1.1, 1.6)* | 1.7 (1.4, 2.1)* | |
| Gender | Men | 1 | 1 | 1 | |
| Women | 1.0 (0.8, 1.2) | 1.0 (0.8, 1.2) | 1.1 (0.9, 1.2) | 1.2 (1.0, 1.3) | |
| Health insurance | Yes | 1 | 1 | 1 | 1 |
| No | 0.4 (0.3, 0.5)* | 0.3 (0.2, 0.4)* | 0.6 (0.4, 0.8)* | 0.5 (0.4, 0.6) * | |
| Education | Elementary | 0.3 (0.2, 0.7)* | 0.4 (0.3, 0.5) * | 0.4 (0.3, 0.6)* | 0.4 (0.3, 0.6)* |
| School | 0.6 (0.5, 0.9)* | 0.6 (0.5, 0.7)* | 0.7 (0.6, 0.9)* | 0.6 (0.5, 0.7)* | |
| College | 1 | 1 | 1 | 1 | |
| Income | Low | 0.6 (0.4, 0.7)* | 0.5 (0.4, 0.6)* | 0.6 (0.5, 0.7)* | 0.5 (0.4, 0.6)* |
| Moderate | 0.7 (0.5, 0.8)* | 0.7 (0.5, 0.8)* | 0.7 (0.6, 0.8)* | 0.7 (0.5, 0.8)* | |
| High | 1 | 1 | 1 | 1 | |
| Employment | Employed | 1 | 1 | 1 | 1 |
| Unemployed | 0.6 (0.4, 0.8)* | 0.5 (0.4, 0.7)* | 0.8 (0.6, 1.1) | 0.7 (0.5, 0.9)* | |
| Others | 1.0 (0.9, 1.1) | 1.3 (1.2, 1.5)* | 0.9 (0.8, 1.1) | 1.3 (1.1, 1.5)* | |
*
Statistically significant difference from reference group.