Table 3.
Comparison of malignant breast lesions characteristics according to positivity of anti‐nuclear antibody (ANA)
| Positive ANA n = 32 | Negative ANA n = 40 | P | |
|---|---|---|---|
| Ethnic background | Caucasians = 32/32, 100% |
Caucasians = 38/40, 95% African descendants = 2/40, 5% |
0·49 |
| Female gender | 32/32, 100% | 39/40, 97·5% | 1·00 |
| Mean age (years) | 53·1 ± 14·74 | 55·10 ± 14·44 | 0·57 |
| Histology |
Ductal invasive = 26/32, 81·2% Others = 6/32, 18·7% |
Ductal invasive = 34/40, 85% Others = 6/40, 15% |
0·30 |
| Stage IV | 10/27, 37·0% | 11/30, 36·6% | 0·97 |
| Luminal A | 5/25, 20% | 7/30, 23·3% | 0·76 |
| Luminal B | 10/25, 40% | 16/30, 53·3% | 0·32 |
| HER‐2‐positive | 4/25, 16% | 3/30, 10% | 0·68 |
| Triple‐negative | 6/25, 24% | 4/30, 13·3% | 0·48 |
| Hormonal receptor‐positive | 16/28, 57·1% | 26/30, 86·6% | 0·01* |
| Smoking | 2/16, 12·5% | 2/26, 7·6% | 0·62 |
| Body mass index (kg/m2) | 29·18 ± 6·13 | 25·99 ± 3·28 | 0·09 |
*Odds ratio = 4·8 (95% confidence interval = 1·33–17·7).