Table 2.
Logistic regression of factors associated with radiation delivery in rectal cancer patients undergoing surgery, SEER17 1998–2007.
| OR | CI (95%) | P value | |
|---|---|---|---|
| Age | |||
| <50 | 10.3 | 9.13–11.64 | <0.0001 |
| 50–59 | 8.09 | 7.28–8.98 | <0.0001 |
| 60–69 | 5.96 | 5.41–6.57 | <0.0001 |
| 70–79 | 2.99 | 2.73–3.28 | <0.0001 |
| >80 | 1 | ||
| Stage | |||
| II | 1 | ||
| III | 1.21 | 1.14–1.29 | <0.0001 |
| Sex | |||
| Male | 1.18 | 1.11–1.26 | <0.0001 |
| Female | 1 | ||
| SES index | |||
| 1 | 1 | ||
| 2 | 0.97 | 0.89–1.07 | 0.5653 |
| 3 | 1.25 | 1.14–1.38 | <0.0001 |
| 4 | 1.18 | 1.06–1.30 | 0.0015 |
| 5 | 1.11 | 1.01–1.22 | 0.0301 |
| Year | |||
| 1998 | 1 | ||
| 1999 | 1.08 | 0.91–1.3 | 0.3758 |
| 2000 | 1.04 | 0.89–1.12 | 0.6421 |
| 2001 | 0.96 | 0.82–1.12 | 0.5919 |
| 2002 | 1.07 | 0.91–1.24 | 0.4243 |
| 2003 | 1.08 | 0.92–1.25 | 0.3579 |
| 2004 | 1.13 | 0.97–1.32 | 0.1160 |
| 2005 | 1.20 | 1.02–1.40 | 0.023 |
| 2006 | 1.33 | 1.13–1.56 | 0.0004 |
| 2007 | 1.41 | 1.20–1.64 | <0.0001 |