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Treatment of breast cancer patients in Southern China and SEER cohorts.
| Treatment | Southern China | SEER | χ2-value | P value |
|---|---|---|---|---|
| N (%) | N (%) | |||
| Chemotherapy | 867.474 | < 0.001 | ||
| Yes | 389 (97.01) | 1574 (26.64) | ||
| No | 12 (2.99) | 4334 (73.36) | ||
| Breast surgery | NA | NA | ||
| Breast-conserving surgery | 20 (4.91) | 5524 (93.50) | ||
| Mastectomy | 387 (95.09) | |||
| No breast surgery | 0 (0) | 384 (6.50) | ||
| Radiation therapy | 229.469 | < 0.001 | ||
| Yes | 131 (27.18) | 3685 (62.37) | ||
| No | 351 (72.82) | 2223 (37.63) | ||
