Table 2. KRAS testing for colorectal cancer by stage and demographics, 2010.
| Stage IV, n (row %) | Stages I-III, n (row %) | ||||||
|---|---|---|---|---|---|---|---|
| No KRAS testing | KRAS testing | p-value | No KRAS testing | KRAS testing | p-value | ||
| TOTAL | 4729 (77.3%) | 1390 (22.7%) | 22955 (94.7%) | 1277 (5.3%) | |||
| Age (years) | <40 | 130 (63.7%) | 74 (36.3%) | <.0001 | 493 (89.5%) | 58 (10.5%) | <.0001 |
| 40-49 | 430 (66.3%) | 219 (33.7%) | 1674 (92.7%) | 132 (7.3%) | |||
| 50-59 | 923 (72.7%) | 346 (27.3%) | 4226 (94.3%) | 256 (5.7%) | |||
| 60-69 | 1205 (77.1%) | 357 (22.9%) | 5416 (94.0%) | 344 (6.0%) | |||
| 70-79 | 1034 (79.1%) | 273 (20.9%) | 5756 (95.4%) | 279 (4.6%) | |||
| 80+ | 1007 (89.3%) | 121 (10.7%) | 5390 (96.3%) | 208 (3.7%) | |||
| Gender | Female | 2177 (77.2%) | 643 (22.8%) | 0.88 | 11110 (94.8%) | 616 (5.2%) | 0.91 |
| Male | 2552 (77.4%) | 747 (22.6%) | 11845 (94.7%) | 661 (5.3%) | |||
| Registry | Californiaa | 1798 (77.6%) | 518 (22.4%) | <.0001 | 9194 (95.4%) | 441 (4.6%) | <.0001 |
| Connecticut | 212 (77.9%) | 60 (22.1%) | 1053 (94.8%) | 58 (5.2%) | |||
| Detroit | 234 (73.8%) | 83 (26.2%) | 1215 (96.1%) | 50 (3.9%) | |||
| Georgiab | 554 (78.9%) | 148 (21.1%) | 2226 (92.6%) | 179 (7.4%) | |||
| Hawaii | 81 (68.1%) | 38 (31.9%) | 465 (95.7%) | 21 (4.3%) | |||
| Iowa | 212 (81.2%) | 49 (18.8%) | 1166 (98.3%) | 20 (1.7%) | |||
| Kentucky | 327 (79.8%) | 83 (20.2%) | 1444 (89.5%) | 169 (10.5%) | |||
| Louisiana | 378 (84.6%) | 69 (15.4%) | 1600 (96.9%) | 51 (3.1%) | |||
| New Jersey | 554 (79.0%) | 147 (21.0%) | 2588 (96.6%) | 91 (3.4%) | |||
| New Mexico | 87 (61.3%) | 55 (38.7%) | 494 (93.2%) | 36 (6.8%) | |||
| Seattle | 211 (66.6%) | 106 (33.4%) | 1080 (88.7%) | 138 (11.3%) | |||
| Utah | 81 (70.4%) | 34 (29.6%) | 430 (94.9%) | 23 (5.1%) | |||
| Race | White | 3604 (77.1%) | 1069 (22.9%) | 0.06 | 18415 (94.7%) | 1029 (5.3%) | 0.49 |
| Black | 719 (80.1%) | 179 (19.9%) | 2489 (94.9%) | 134 (5.1%) | |||
| Other | 383 (73.9%) | 135 (26.1%) | 1867 (95.0%) | 99 (5.0%) | |||
| Missing | 23 (76.7%) | 7 (23.3%) | 184 (92.5%) | 15 (7.5%) | |||
| Insurance | Insured | 3671 (76.9%) | 1102 (23.1%) | 0.58 | 19258 (94.7%) | 1080 (5.3%) | 0.0006 |
| Medicaid | 687 (79.0%) | 183 (21.0%) | 2279 (94.0%) | 145 (6.0%) | |||
| Uninsured | 249 (77.6%) | 72 (22.4%) | 717 (95.1%) | 37 (4.9%) | |||
| Missing | 122 (78.7%) | 33 (21.3%) | 701 (97.9%) | 15 (2.1%) | |||
| Marital Status | Married | 2319 (74.3%) | 801 (25.7%) | <.0001 | 12256 (94.8%) | 676 (5.2%) | <.0001 |
| Divorced/Separated | 529 (76.8%) | 160 (23.2%) | 2235 (92.9%) | 172 (7.1%) | |||
| Widowed | 785 (84.3%) | 146 (15.7%) | 4131 (95.9%) | 176 (4.1%) | |||
| Single/Never married | 845 (78.8%) | 227 (21.2%) | 3061 (93.4%) | 218 (6.6%) | |||
| Missing | 251 (81.8%) | 56 (18.2%) | 1272 (97.3%) | 35 (2.7%) | |||
| Area of Residence | Metro area | 4003 (76.7%) | 1219 (23.3%) | 0.004 | 19750 (94.5%) | 1143 (5.5%) | 0.0005 |
| Non-Metro area/Rural/Alaska | 726 (81.0%) | 170 (19.0%) | 3201 (96.0%) | 134 (4.0%) | |||
| Missing | 0 (0%) | 1 (100%) | 4 (100%) | 0 (0%) | |||
a
Los Angeles, San Francisco, San Jose, and Greater California registries combined;
b
Atlanta, Rural Georgia, and Greater Georgia registries combined