Table 3 –
Study sample characteristics - Year 2004 versus Year 2015
| Characteristics | Year 2004 (n = 1981) | Year 2015 (n = 2354) | P value |
|---|---|---|---|
| Age group, y | <0.0001 | ||
| 70–74 | 642 (32.41) | 973 (41.33) | |
| 75–79 | 743 (37.51) | 763 (32.41) | |
| 80–84 | 453 (22.87) | 429 (18.22) | |
| 85+ | 143 (7.22) | 189 (8.03) | |
| Race | 0.0052 | ||
| White | 1826 (92.18) | 2112 (89.72) | |
| Other | 155 (7.82) | 242 (10.28) | |
| Marital status | 0.0111 | ||
| Single/Other | 1109 (55.98) | 1227 (52.12) | |
| Married | 872 (44.02) | 1127 (47.88) | |
| Tumor size, cm | 0.2046 | ||
| 0–1 | 747 (37.71) | 932 (39.59) | |
| 1–2 | 1234 (62.29) | 1422 (60.41) | |
| Geographic region | 0.0022 | ||
| Midwest | 248 (12.52) | 262 (11.13) | |
| Northeast | 506 (25.54) | 515 (21.88) | |
| South | 378 (19.08) | 530 (22.51) | |
| West | 849 (42.86) | 1047 (44.48) | |
| Socioeconomic status | <0.0001 | ||
| 1st quartile | 837 (42.25) | 587 (24.94) | |
| 2nd quartile | 340 (17.16) | 627 (26.64) | |
| 3rd quartile | 438 (22.11) | 595 (25.28) | |
| 4th quartile (low) | 366 (18.48) | 545 (23.15) | |
| CCI | <0.0001 | ||
| 0 | 1260 (63.60) | 1409 (59.86) | |
| 1 | 486 (24.53) | 527 (22.39) | |
| 2+ | 235 (11.86) | 418 (17.76) |