Table 3.
Overall and stratified prevalence ratios of stage at diagnosis comparing ACTUR with SEER among colon cases
| Variables | Tumor Stage | Adjusted PRa (95% CI) | |
|---|---|---|---|
| Stages I and II | Stages III and IV | ||
| Overall | |||
| SEER | 10594 | 11095 | 1.00 (ref.) |
| ACTUR | 5538 | 5297 | 0.90 (0.85–0.94) |
| By Age | |||
| 18–39 | |||
| SEER | 428 | 719 | 1.00 (ref.) |
| ACTUR | 208 | 373 | 1.02 (0.80-1.29) |
| 40–49 | |||
| SEER | 862 | 1237 | 1.00 (ref.) |
| ACTUR | 411 | 643 | 1.00 (0.85-1.19) |
| 50–64 | |||
| SEER | 4113 | 4619 | 1.00 (ref.) |
| ACTUR | 2189 | 2181 | 0.86 (0.79–0.93) |
| 65–74 | |||
| SEER | 2987 | 2825 | 1.00 (ref.) |
| ACTUR | 1612 | 1288 | 0.88 (0.79–0.98) |
| 75 or older | |||
| SEER | 2204 | 1695 | 1.00 (ref.) |
| ACTUR | 1118 | 812 | 0.93 (0.82–1.06) |
| By Gender | |||
| Male | |||
| SEER | 6515 | 6743 | 1.00 (ref.) |
| ACTUR | 3415 | 3206 | 0.87 (0.82–0.94) |
| Female | |||
| SEER | 4079 | 4352 | 1.00 (ref.) |
| ACTUR | 2123 | 2091 | 0.93 (0.86–1.02) |
| By Race | |||
| White | |||
| SEER | 8630 | 8537 | 1.00 (ref.) |
| ACTUR | 4518 | 4094 | 0.89 (0.84–0.95) |
| Black | |||
| SEER | 1361 | 1810 | 1.00 (ref.) |
| ACTUR | 730 | 871 | 0.85 (0.75–0.98) |
| Asian/Pacific Islander | |||
| SEER | 603 | 648 | 1.00 (ref.) |
| ACTUR | 290 | 332 | 1.05(0.85-1.31) |
a
In the overall analysis, PR was adjusted for continuous age, sex, race, year of diagnosis, region of diagnosis, and tumor location. In stratified analysis, all variables in the overall analysis were adjusted for the variables in the overall analysis except the stratification variable itself. PR=Prevalence ratio; CI=95% confidence interval