Logistic Regression Models: Adjusted Odds Ratios of Current CRC Screening
| Model 1 (n = 542) OR (95% CI) | Model 2 (n = 542) OR (95% CI) | Model 3 (n = 542) OR (95% CI) | Model 4 (n = 542) OR (95% CI) | |
|---|---|---|---|---|
| Race/ethnicity | ||||
| White | 1.00 | 1.00 | 1.00 | 1.00 |
| African-American | 0.59 (0.37–0.95) | 0.58 (0.35–0.96) | 0.64 (0.38–1.07) | 0.59 (0.34–1.03) |
| Hispanic | 0.54 (0.33–0.89) | 0.54 (0.32–0.92) | 0.73 (0.43–1.25) | 0.68 (0.38–1.21) |
| Age | ||||
| 50–64 | 1.00 | 1.00 | 1.00 | 1.00 |
| 65–80 | 2.37 (1.48–3.79) | 2.81 (1.71–4.60) | 2.46 (1.45–4.17) | 2.88 (1.68–4.95) |
| Gender | ||||
| Male | 1.00 | 1.00 | 1.00 | 1.00 |
| Female | 0.79 (0.50–1.25) | 0.79 (0.49–1.28) | 0.86 (0.53–1.40) | 0.89 (0.53–1.49) |
| Socioeconomic | ||||
| Education (yrs) | ||||
| 0–11 | 1.00 | 1.00 | 1.00 | 1.00 |
| 12 | 2.07 (1.13–3.81) | 1.94 (1.05–3.59) | 1.93 (0.99–3.72) | 1.82 (0.94–3.51) |
| ≤13 | 2.21 (1.23–3.99) | 2.03 (1.08–2.96) | 2.11 (1.15–3.86) | 2.07 (1.09–3.92) |
| Knowledge and beliefs | ||||
| Susceptibility | 1.80 (1.10–2.96) | 1.74 (1.04–2.91) | ||
| Benefits | 1.06 (0.63–1.78) | 1.04 (0.60–1.81) | ||
| Barriers | 1.68 (1.03–2.75) | 1.70 (1.00–2.89) | ||
| Fatalism | 1.17 (0.70–1.95) | 1.32 (0.78–2.24) | ||
| Knowledge | 1.05 (0.64–1.73) | 1.03 (0.60–1.76) | ||
| Awareness of screening (reference not) | 3.71 (1.76–7.80) | 3.32 (1.47–7.53) | ||
| Medical history/health care interaction | ||||
| Health status (referent is fair/poor) | 1.05 (0.63–1.74) | 0.99 (0.60–1.65) | ||
| Family history of CRC (reference none) | 1.08 (0.53–2.18) | 1.01 (0.48–2.13) | ||
| Previous testing (reference is none) | 1.43 (0.87–2.37) | 1.43 (0.85–2.39) | ||
| Annual health exam (referent is never) | 2.00 (0.92–4.35) | 1.86 (0.78–4.41) | ||
| Regular doctor (reference none) | 1.35 (0.53–3.44) | 1.38 (0.49–3.90) | ||
| Dr. Recommendation (reference none) | 3.94 (2.37–6.57) | 3.86 (2.30-6.50) | ||
| Doctor satisfaction | 0.63 (0.38–1.06) | 0.62 (0.37–1.04) | ||
| Hosmer and Lemeshow goodness of fit | 0.22 | 0.11 | 0.69 | 0.73 |
Odds ratios are for CRC screening with any test according to recommended guidelines; bold type indicates statistical significance. OR, odds ratios; CRC, colorectal cancer; PCP, primary care physician.