Table 3.
Crude and adjusted odds ratios for statistically significant variables in women with breast cancer who underwent breast-conserving surgery and who were registered in HSRC during the period from January 1, 2000 to December 31, 2010.
| Variables | Categories | Crude OR | Adjusted OR* | ||||||
|---|---|---|---|---|---|---|---|---|---|
| P value | OR | LI 95% | LS 95% | P value | OR | LI 95% | LS 95% | ||
| Age group | Less than 39 years | 0.007 | 17.11 | 2.19 | 133.63 | 0.028 | 10.93 | 1.29 | 92.66 |
| 40 to 49 | 0.032 | 9.13 | 1.21 | 68.81 | 0.083 | 6.28 | 0.78 | 50.23 | |
| 50 to 59 | 0.068 | 6.67 | 0.87 | 50.95 | 0.118 | 5.33 | 0.65 | 43.49 | |
| 60 to 69 | 0.122 | 5.17 | 0.65 | 41.43 | 0.147 | 4.89 | 0.57 | 41.86 | |
| 70 years and over | 1.00 | 1.00 | |||||||
|
| |||||||||
| Race/ethnicity | White | 1.00 | 1.00 | ||||||
| Nonwhite | 0.090 | 1.70 | 0.92 | 3.15 | 0.488 | 1.29 | 0.63 | 2.64 | |
|
| |||||||||
| Histological type | Ductal and mixed carcinoma | 0.080 | 5.91 | 0.81 | 43.35 | 0.997 | 1.50 | 0.10 | 4.00 |
| Lobular carcinoma | 0.042 | 9.62 | 1.09 | 85.21 | 0.997 | 1.30 | 0.20 | 3.50 | |
| Others | 1.00 | 1.00 | |||||||
|
| |||||||||
| First treatment after surgery | None | 0.998 | ∗∗ | ∗∗ | ∗∗ | 0.998 | ∗∗ | ∗∗ | ∗∗ |
| RT | 0.747 | 1.28 | 0.29 | 5.60 | 0.886 | 0.89 | 0.18 | 4.40 | |
| CT | 0.251 | 2.35 | 0.55 | 10.08 | 0.789 | 0.80 | 0.16 | 4.05 | |
| Hormone | 1.00 | 1.00 | |||||||
|
| |||||||||
| Size in cm | ≤0.5 | 1.00 | 1.00 | ||||||
| 0.6–1.0 | 0.765 | 0.81 | 0.20 | 3.33 | 0.413 | 0.52 | 0.11 | 2.47 | |
| 1.1–1.5 | 0.426 | 0.55 | 0.13 | 2.38 | 0.257 | 0.41 | 0.09 | 1.93 | |
| 1.6–2.0 | 0.250 | 2.11 | 0.59 | 7.49 | 0.866 | 1.13 | 0.27 | 4.67 | |
| >2.0 | 0.192 | 2.26 | 0.67 | 7.66 | 0.673 | 1.34 | 0.34 | 5.27 | |
|
| |||||||||
| Vascular and/or lymphatic invasion | No | 1.00 | 1.00 | ||||||
| Yes | 0.098 | 1.70 | 0.91 | 3.19 | 0.606 | 1.22 | 0.58 | 2.57 | |
|
| |||||||||
| Surgical margin involvement | Negative | 1.00 | 1.00 | ||||||
| Positive | 0.000 | 3.48 | 1.75 | 6.94 | 0.001 | 3.66 | 1.65 | 8.09 | |
|
| |||||||||
| Oestrogen receptor | Negative | 1.00 | 1.00 | ||||||
| Positive | 0.091 | 0.60 | 0.33 | 1.09 | 0.101 | 0.56 | 0.29 | 1.12 | |
|
| |||||||||
| Her-2 | Negative | 1.00 | 1.00 | ||||||
| Positive | 0.018 | 2.03 | 1.13 | 3.67 | 0.045 | 1.94 | 1.02 | 3.72 | |
*The total data analysed were based on 676 women (76.8%), due to missing data in at least one variable.
**could not be calculated because no women with local recurrences remained in this analysis category.
RT: radiotherapy, CT: chemotherapy.