Table 3.
Stratified multinomial logistic regression analyses assessing the likelihood of operation type among female Department of Defense beneficiaries with breast cancer, 2001–2007 (N=5,548).
| Stratum | Surgical Operation | Comorbidity
|
|||||
|---|---|---|---|---|---|---|---|
| Charlson index=0
|
Charlson index≥1
|
OR (95% CI) 2 | |||||
| N | % | N | % | ||||
| Tumor Stage | Stage I | BCS1 | 1,612 | 63% | 122 | 57% | Reference |
| Mastectomy | 958 | 37% | 92 | 43% | 0.90 (0.72–1.14) | ||
| Stage II | BCS | 894 | 46% | 59 | 31% | Reference | |
| Mastectomy | 1,044 | 54% | 130 | 69% | 1.39 (1.15–1.69) * | ||
| Stage III | BCS | 117 | 21% | 8 | 11% | Reference | |
| Mastectomy | 450 | 79% | 62 | 89% | 1.45 (0.98–2.16) | ||
| Tumor Size, cm | ≤2 | BCS | 2,336 | 55% | 175 | 46% | Reference |
| Mastectomy | 1,897 | 45% | 208 | 54% | 1.10 (0.95–1.27) | ||
| >2 | BCS | 251 | 35% | 9 | 12% | Reference | |
| Mastectomy | 476 | 65% | 66 | 88% | 1.96 (1.32–2.91) * | ||
1
Breast conserving surgery
2
Unless stratified by the variable, all models were adjusted for radiation, age at diagnosis, race, marital status, duty status at diagnosis, year of diagnosis, tumor stage, tumor grade, tumor size, estrogen receptor status, chemotherapy, and hormonal therapy.
3
Unknown categories are not included in this table; therefore, values for race, marital status, tumor stage, tumor grade, tumor size, and ER status do not add up to the total number of patients.
*
p<0.05