Table 4.
Association of race, age, SES and access to care latent classes with treatment duration by modality in Carolina Breast Cancer Study 3 (2008-2013)
| Treatment durationa |
||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Surgery only |
Surgery & radiation |
Surgery & chemotherapy |
Surgery, rad. & chemo. |
|||||||||||||
| Q1-3 (74.7%) | Q4 (25.3%) | Q1-3 (73.8%) | Q4 (26.2%) | Q1-3 (74.8%) | Q4 (25.2%) | Q1-3 (74.9%) | Q4 (25.1%) | |||||||||
| No. | (%) | No. | (%) | No. | (%) | No. | (%) | No. | (%) | No. | (%) | No. | (%) | No. | (%) | |
| Race | ||||||||||||||||
| White | 171 | (78.8) | 46 | (21.2) | 302 | (77.4) | 88 | (22.6) | 302 | (77.4) | 88 | (22.6) | 175 | (81.8) | 39 | (18.2) |
| Black | 104 | (68.9) | 47 | (31.1) | 184 | (68.4) | 85 | (31.6) | 184 | (68.4) | 85 | (31.6) | 122 | (66.7) | 61 | (33.3) |
| Black vs. white, RFD (95% CI) | ref | 9.9% (0.8, 19.1) | ref | 9.0% (2.1, 16.0) | ref | 15.1% (6.5, 23.7) | ref | 7.3% (2.8, 11.8) | ||||||||
| Age | ||||||||||||||||
| Older | 166 | (79.4) | 43 | (20.6) | 354 | (74.8) | 119 | (25.2) | 108 | (69.7) | 47 | (30.3) | 458 | (77.9) | 130 | (22.1) |
| Younger | 109 | (68.6) | 50 | (31.5) | 132 | (71.0) | 54 | (29.0) | 189 | (78.1) | 53 | (21.9) | 603 | (72.7) | 226 | (27.3) |
| Younger vs. older, RFD (95% CI) | ref | 10.9% (1.8, 19.9) | ref | 3.9% (−3.7, 11.5) | ref | −8.4% (−17.3, 0.1) | ref | 5.2% (0.6, 9.7) | ||||||||
| SES latent classes | ||||||||||||||||
| High SES | 144 | (77.4) | 42 | (22.6) | 290 | (78.2) | 81 | (21.8) | 180 | (79.7) | 46 | (20.3) | 578 | (80.1) | 144 | (19.9) |
| Low SES | 131 | (72.0) | 51 | (28.0) | 196 | (68.1) | 92 | (31.9) | 117 | (68.4) | 54 | (31.6) | 483 | (69.5) | 212 | (30.5) |
| Low vs. High, RFD (95% CI) | ref | 5.4% (−3.4, 14.3) | ref | 10.1% (3.3, 16.9) | ref | 11.2% (2.5, 19.9) | ref | 10.6% (6.1, 15.1) | ||||||||
| Access to care latent classes | ||||||||||||||||
| Fewer Barriers to Care | 259 | (75.7) | 83 | (24.3) | 465 | (75.0) | 155 | (25.0) | 263 | (74.9) | 88 | (25.1) | 967 | (76.6) | 295 | (23.4) |
| More Barriers to Care | 16 | (61.5) | 10 | (38.5) | 21 | (53.9) | 18 | (46.2) | 33 | (73.3) | 12 | (26.7) | 94 | (60.7) | 61 | (39.4) |
| Low vs. high, RFD (95% CI) | ref | 14.2% (−5.1, 33.4) | ref | 21.2% (5.1, 37.2) | ref | 1.6% (−12.1, 15.3) | ref | 16.0% (7.9, 24.0) | ||||||||
a
n = 368, 659, 397, and 1417 for surgery only, surgery + radiation, surgery + chemotherapy, and surgery + radiation + chemotherapy, respectively
Abbreviations: CI, confidence interval; RFD, relative frequency difference; SES, socioeconomic status