TABLE 1.
Association between patient characteristics and analytic case status among Moffitt Cancer Center patients (MCC) diagnosed with breast cancer, colon cancer, lung cancer, melanoma, and prostate cancer in 2008–2020.
| Baseline characteristics | Class of case | |||
|---|---|---|---|---|
| Analytic cases | Non‐analytic cases | Odds ratio (95% confidence interval) | ||
| Cohort‐adjusted a | Multivariable | |||
| Age | ||||
| 18–64 | 16,453 (50.5) | 4714 (52.8) | 1.00 (reference) | 1.00 (reference) |
| 65 or higher | 16,155 (49.5) | 4217 (47.2) | 0.82 (0.78–0.86) | 0.81 (0.67–0.97) |
| Age | ||||
| 18–39 | 1505 (4.6) | 390 (4.4) | 1.00 (reference) | Not included b |
| 40–64 | 14,948 (45.8) | 4324 (48.4) | 0.85 (0.75–0.96) | |
| 65 or higher | 16,155 (49.5) | 4217 (47.2) | 0.70 (0.62–0.79) | |
| Gender | ||||
| Female | 18,522 (56.8) | 4113 (46.1) | 1.00 (reference) | 1.00 (reference) |
| Male | 14,084 (43.2) | 4817 (53.9) | 1.19 (1.11–1.26) | 1.21 (1.11–1.32) |
| Race | ||||
| White | 29,433 (90.6) | 7835 (88.1) | 1.00 (reference) | 1.00 (reference) |
| Asian | 447 (1.4) | 124 (1.4) | 1.06 (0.86–1.30) | 0.98 (0.72–1.30) |
| Black | 1608 (4.9) | 668 (7.5) | 1.45 (1.32–1.60) | 1.26 (1.09–1.44) |
| Other/multiple | 1011 (3.1) | 264 (3.0) | 0.93 (0.81–1.07) | 0.83 (0.67–1.02) |
| Ethnicity | ||||
| Non‐Hispanic | 30,288 (93.1) | 8241 (92.9) | 1.00 (reference) | Not included |
| Hispanic or Spanish origin | 2237 (6.9) | 632 (7.1) | 1.03 (0.94–1.13) | |
| Payment method (all ages) | ||||
| Private/Manage | 13,029 (40.4) | 1562 (36.2) | 1.00 (reference) | 1.00 (reference) |
| Self‐pay/not insured | 1533 (4.8) | 150 (3.5) | 0.80 (0.67–0.95) | 0.77 (0.63–0.92) |
| Medicaid | 1238 (3.8) | 195 (4.5) | 1.30 (1.10–1.52) | 1.34 (1.13–1.59) |
| Medicare | 15,331 (47.5) | 2288 (53.0) | 1.10 (1.02–1.18) | 1.78 (1.54–2.05) |
| Tricare/VA | 1118 (3.5) | 122 (2.8) | 0.83 (0.68–1.00) | 0.80 (0.61–1.03) |
| Payment method (age 18–64) | ||||
| Private/Manage | 11,737 (72.3) | 1417 (66.8) | 1.00 (reference) | Reference for interaction term |
| Self‐pay/not insured | 1429 (8.8) | 138 (6.5) | 0.78 (0.64–0.93) | |
| Medicaid | 1167 (7.2) | 189 (8.9) | 1.28 (1.08–1.51) | |
| Medicare | 1216 (7.5) | 305 (14.4) | 1.77 (1.54–2.03) | |
| Tricare/VA | 682 (4.2) | 72 (3.4) | 0.85 (0.66–1.09) | |
| Payment method (age 65 and above) | Interaction effect | |||
| Private/Manage | 1292 (8.1) | 145 (6.6) | 1.00 (reference) | (age: payment) |
| Self‐pay/not insured | 104 (0.6) | 12 (0.5) | 0.98 (0.50–1.78) | 1.15 (0.57–2.16) |
| Medicaid | 71 (0.4) | 6 (0.3) | 0.78 (0.30–1.70) | 0.55 (0.19–1.31) |
| Medicare | 14,115 (88.1) | 1983 (90.3) | 1.25 (1.05–1.51) | 0.72 (0.57–0.91) |
| Tricare/VA | 436 (2.7) | 50 (2.3) | 0.93 (0.65–1.30) | 1.19 (0.77–1.84) |
| Cigarettes use | ||||
| Never | 12,172 (43.5) | 3332 (41.2) | 1.00 (reference) | Dropped due to lack of significance |
| Former | 12,217 (43.7) | 3791 (46.9) | 0.96 (0.90–1.01) | |
| Current | 3594 (12.8) | 967 (12.0) | 0.82 (0.75–0.90) | |
| Whether address at diagnosis is within MCC catchment area (15 counties in FL c ) | ||||
| No | 6447 (19.9) | 1653 (34.1) | 1.00 (reference) | 1.00 (reference) |
| Yes | 26,024 (80.1) | 3188 (65.9) | 0.47 (0.44–0.50) | 0.48 (0.45–0.52) |
| Cohort | ||||
| Breast | 10,528 (32.3) | 1806 (20.2) | Not applicable | 1.00 (reference) |
| Colon | 1873 (5.7) | 1213 (13.6) | 3.04 (2.67–3.46) | |
| Lung | 7853 (24.1) | 2751 (30.8) | 2.17 (1.96–2.40) | |
| Melanoma | 7611 (23.3) | 1210 (13.5) | 0.80 (0.70–0.90) | |
| Prostate | 4743 (14.5) | 1951 (21.8) | 1.77 (1.55–2.02) | |
The estimated odds ratio and confidence interval were calculated using logistic regression adjusting for cancer types the patient diagnosed with.
The three‐group age variable was not included in the multivariable analysis due to (1) not being significant in the univariable analysis, and (2) not being compatible with the binary age categorization used in the analysis of interaction between age and payment method.
The 15‐county MCC catchment area included the following counties in Florida: Charlotte, Citrus, Desoto, Hardee, Hernando, Highlands, Hillsborough, Lake, Lee, Manatee, Pasco, Pinellas, Polk, Sarasota, or Sumter.