Table 1.
Patient characteristics by race and ODX risk group
| n (weighted proportion) | ODX risk group |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean (standard deviation) or % |
|||||||||
| Low (54.2 %) |
Intermediate (37.5 %) |
High (8.3 %) |
|||||||
| Non-Black 195 (54.8 %) | Black 93 (49.8 %) | p † | Non-Black 131 (37.4 %) | Black 69 (37.9 %) | p † | Non-Black 29 (7.7 %) | Black 24 (12.3 %) | p † | |
| Tumor characteristics | |||||||||
| ODX recurrence score | 11.2 (3.9) | 11.3 (6.6) | 0.85 | 22.3 (3.2) | 23.5 (5.9) | 0.04 | 41.6 (7.2) | 39.6 (13.1) | 0.42 |
| AJCC Stage 1 (v. 2) | 68.3 | 66.5 | 0.79 | 62.5 | 67.8 | 0.47 | 77.9 | 51.6 | 0.08 |
| Tumor size category | 0.64 | 0.60 | 0.16 | ||||||
| <2 cm | 75.3 | 72.3 | 70.8 | 74.1 | 77.9 | 57.0 | |||
| 2+ cm | 24.7 | 27.7 | 29.2 | 25.9 | 22.1 | 43.0 | |||
| Combined grade | 0.03 | 0.39 | 0.29 | ||||||
| 1 | 42.3 | 26.3 | 23.1 | 32.2 | * | * | |||
| 2 | 53.2 | 65.2 | 57.8 | 54.2 | * | 25.8 | |||
| 3 | 4.5 | 8.5 | 19.1 | 13.6 | 79.9 | 68.8 | |||
| PR positive | 96.7 | 97.3 | 0.79 | 89.9 | 72.7 | 0.003 | 67.8 | 55.9 | 0.44 |
| Treatment characteristics | |||||||||
| Chemo initiation | 5.9 | 7.2 | 0.69 | 46.2 | 42.7 | 0.66 | 76.5 | 94.6 | 0.11 |
| ET initiation | 92.4 | 93.1 | 0.84 | 97 | 94.4 | 0.41 | 92.6 | 84.9 | 0.42 |
| Radiation initiation | 67.4 | 70.2 | 0.68 | 66.9 | 70.6 | 0.62 | 57 | 59.1 | 0.89 |
| Lumpectomy (v. mastectomy) | 66.3 | 66.5 | 0.98 | 63.5 | 71.7 | 0.27 | 57 | 62.4 | 0.74 |
| Clinical characteristics | |||||||||
| Age at diagnosis | 57.4 (8.7) | 54.4 (15.6) | 0.002 | 56.4 (8.7) | 55.8 (15.7) | 0.66 | 57.7 (9.8) | 55.4 (17.3) | 0.22 |
| #Comorbidities | 0.7 (0.8) | 1.1 (1.5) | <0.001 | 0.5 (0.6) | 1.0 (1.4) | <0.001 | 0.7 (1.0) | 1.4 (1.2) | 0.02 |
| Diabetes | 7.4 | 20.7 | 0.003 | 7.7 | 20.3 | 0.01 | * | 40.9 | 0.01 |
| COPD | * | * | 0.62 | * | * | 0.56 | * | * | 0.59 |
| Obesity | 14 | 21.3 | 0.13 | 8.7 | 18.2 | 0.1 | * | 31.2 | 0.07 |
| Heart disease | 4.8 | * | 0.19 | * | * | 0.3 | * | * | >0.99 |
| Hypertension | 39.8 | 64.9 | <0.001 | 31.1 | 59.4 | <0.001 | 43.6 | 66.7 | 0.08 |
| Socioeconomic factors | |||||||||
| Annual family income | <0.001 | <0.001 | 0.02 | ||||||
| <$15K | 7.6 | 18.9 | 4.4 | 17.5 | * | * | |||
| $15-30K | 12.2 | 24.7 | 6.5 | 30.1 | 23.5 | 32.3 | |||
| $30-50K | 18.1 | 23.4 | 16.3 | 26.9 | 19.5 | * | |||
| >$50K | 62.0 | 33.0 | 72.8 | 25.5 | 57 | 37.6 | |||
| Insurance | |||||||||
| Private | 80.7 | 69.3 | 0.05 | 85.7 | 66 | 0.01 | 67.8 | 77.6 | 0.47 |
| Medicaid | 5.6 | 19.3 | <0.001 | 4 | 19.3 | <0.001 | * | 22.4 | 0.14 |
| Medicare | 32.5 | 24.4 | 0.19 | 31 | 28.2 | 0.73 | 43 | 42.4 | 0.97 |
| Uninsured | * | 10.6 | <0.001 | 3 | 9.4 | 0.07 | * | * | 0.01 |
| Married | 69.5 | 46.8 | <0.001 | 82.2 | 43.7 | <0.001 | 68.5 | 31.2 | 0.02 |
| Employed | 49.8 | 51.3 | 0.81 | 53.7 | 43.7 | 0.19 | 41.6 | 40.9 | 0.96 |
| Education | 0.008 | 0.1 | 0.81 | ||||||
| HS & Post-HS | 47.8 | 48.1 | 46.9 | 59.8 | 51.7 | 48.4 | |||
| College+ | 49.4 | 39.6 | 47.9 | 31.1 | 37.6 | 34.4 | |||
| <HS | 2.8 | 12.2 | 5.3 | 9.1 | * | * | |||
| Year of diagnosis | |||||||||
| 0.16 | 0.30 | 0.80 | |||||||
| 2008 | 6.1 | 13.6 | 15.4 | 9.1 | 23.5 | * | |||
| 2009 | 19.2 | 20.2 | 20.3 | 17.5 | * | * | |||
| 2010 | 27.3 | 17.8 | 20.1 | 24.8 | 27.5 | 22.6 | |||
| 2011 | 25.2 | 28.5 | 20.7 | 31.5 | 22.1 | 37.6 | |||
| 2012/2013 | 22.2 | 19.9 | 23.5 | 17.1 | * | * | |||
*
Data not reported for cell sizes <5
†
p value for weighted χ2 = 0.23. Because of small cell size, we combined women who were diagnosed in 2013 (n = 8) with 2012, and women who had tumor size >5 cm (n = 5) with 2-5 cm