Table 2.
Association of Independent Variables with Colorectal Cancer Screening
| Variable (n in thousands) | Unadjusted odds ratio* | Adjusted odds ratio† |
|---|---|---|
| (95% Confidence interval) | (95% Confidence interval) | |
| Concordance | ||
| English (ref) (21.6) | 1.0 | 1.0 |
| Other concordance (1.4) | 0.40 (0.33–0.47) | 0.57 (0.46–0.71) |
| Other discordance (0.2) | 0.59 (0.42–0.84) | 0.84 (0.58–1.2) |
| Age | ||
| 50–64 (ref) (13.3) | 1.0 | 1.0 |
| 65–74 (5.3) | 1.74 (1.62–1.88) | 1.55 (1.42–1.70) |
| 75–85 (4.6) | 1.39 (1.28–1.51) | 1.22 (1.10–1.35) |
| Sex | ||
| Male (ref) (10) | 1.0 | 1.0 |
| Female (13.3) | 0.92 (0.87–0.97) | 0.88 (0.83–0.94) |
| Race | ||
| White non-Hispanic (ref) (16.5) | 1.0 | 1.0 |
| Black (3.3) | 0.80 (0.72–0.89) | 0.97 (0.88–1.08) |
| Hispanic (2.4) | 0.57 (0.50–0.64) | 0.92 (0.79–1.07) |
| Asian (0.6) | 0.55 (0.45–0.68) | 0.60 (0.48–0.76) |
| Other (0.5) | 0.70 (0.57–0.86) | 0.83 (0.67–1.03) |
| Income‡ | ||
| High income (ref) (9.1) | 1.0 | 1.0 |
| Middle income (6.4) | 0.79 (0.73–0.86) | 0.88 (0.81–0.96) |
| Low income (3.3) | 0.67 (0.60–0.74) | 0.74 (0.66–0.84) |
| Poor/near poor (4.5) | 0.59 (0.53–0.65) | 0.70 (0.62–0.80) |
| Education level | ||
| College (ref) (4.9) | 1.0 | 1.0 |
| High school or GED (11.2) | 0.72 (0.67–0.78) | 0.74 (0.68–0.80) |
| No degree (5.6) | 0.47 (0.43–0.51) | 0.51 (0.46–0.58) |
| Other (1.5) | 0.74 (0.65–0.84) | 0.77 (0.67–0.89) |
| Insurance coverage | ||
| Any private (ref) (15.3) | 1.0 | 1.0 |
| Public only (6.2) | 0.83 (0.77–0.90) | 0.87 (0.79–0.96) |
| Uninsured (1.7) | 0.28 (0.24–0.32) | 0.54 (0.46–0.63) |
| Year | ||
| 2002 (ref) (8.7) | 1.0 | 1.0 |
| 2004 (7.1) | 1.11 (1.03–1.19) | 1.09 (1.01–1.18) |
| 2006 (7.5) | 1.23 (1.14–1.34) | 1.25 (1.15–1.35) |
| Region | ||
| Northeast (ref) (3.9) | 1.0 | 1.0 |
| Midwest (5.1) | 0.85 (0.73–0.99) | 0.91 (0.79–1.05) |
| South (9.3) | 0.81 (0.70–0.94) | 0.89 (0.77–1.03) |
| West (5.0) | 0.80 (0.69–0.92) | 0.91 (0.78–1.05) |
| Physical component score§ | ||
| High (ref) (11.7) | 1.0 | 1.0 |
| Low (11.6) | 1.17 (1.11–1.24) | 1.14 (1.07–1.22) |
| Mental component score§ | ||
| High (ref) (11.6) | 1.0 | n/a |
| Low (11.6) | 0.88 (0.83–0.94) | |
| Employment | ||
| Employed (ref) (11.1) | 1.0 | 1.0 |
| Not employed (12.2) | 1.33 (1.25–1.41) | 1.35 (1.24–1.46) |
| Marital status | ||
| Married (ref) (13.8) | 1.0 | 1.0 |
| Not married (9.5) | 0.78 (0.72–0.83) | 0.90 (0.83–0.98) |
| Time since last checkup | ||
| Never (ref) (0.8) | 1.0 | 1.0 |
| >2 years (2.6) | 0.84 (0.64–1.12) | 0.78 (0.59–1.03) |
| ≤2 years (19.9) | 4.37 (3.34–5.70) | 3.59 (2.77–4.65) |
*Odds ratios determined from weighted sample
†Adjusted for all variables in table except MCS
‡Poor/near-poor (<125% Federal Poverty Level), low (125–<200 % FPL), middle (200–<400% FPL), high (≥400% FPL)
§Low = scores less than the median of the study population; high = scores greater than or equal to the median of the study population