TABLE 2.
Patient characteristics associated with initiation of colorectal cancer screening in members of Group Health, 1996-2010.
| Patient characteristics | HR* | 95% CI |
|---|---|---|
| Year of 50th birthday | ||
| 1996-1998 | Referent | |
| 1999-2001 | 1.12 | (1.09-1.15) |
| 2002-2004 | 1.32 | (1.28-1.36) |
| 2005-2007 | 1.42 | (1.42-1.52) |
| 2008-2010 | 2.04 | (1.95-2.12) |
| p-trend | <0.0001 | |
| Gender | ||
| Men | Referent | |
| Women | 0.71 | (0.70-0.73) |
| Race | ||
| White | Referent | |
| Black | 0.96 | (0.91-1.01) |
| Asian | 1.14 | (1.10-1.19) |
| Hispanic | 1.01 | (0.96-1.07) |
| Pacific Islander | 0.80 | (0.69-0.92) |
| Native American | 0.70 | (0.61-0.80) |
| Multiracial | 0.98 | (0.90-1.05) |
| Unknown | 0.66 | (0.64-0.68) |
| Family history of colorectal cancer | ||
| No | Referent | |
| Yes | 1.78 | (1.71-1.84) |
| Diagnosis of diabetes mellitus | ||
| No | Referent | |
| Yes | 0.79 | (0.76-0.82) |
| Body Mass Index (kg/m2) | ||
| <18.5 | 0.98 | (0.85-1.12) |
| 18.5-24.9 | Referent | |
| 25-29.9 | 0.90 | (0.87-0.93) |
| 30-34.9 | 0.81 | (0.78-0.84) |
| >35 | 0.72 | (0.69-0.75) |
| Unknown | 0.56 | (0.54-0.58) |
| p-trend | <0.0001 | |
| Primary care visit at age 49 years | ||
| No | Referent | |
| Yes | 1.42 | (1.38-1.45) |
*
Analyses are adjusted for all variables presented in the table.