Background
Methods
Patients
Structured | Variables extracted using NLP |
---|---|
• Age | • Calcification distribution |
• Family history (of breast cancer)† | • Calcification morphology¥ |
• Personal history (of breast cancer) | • Mass margins |
• Prior surgery‡ | • Mass shape |
• Palpable lump | • Architectural distortion |
• Breast density | • Focal asymmetric density |
• BI-RADS assessment | |
• Indication for exam if diagnostic | |
• Principal mammography findingΨ | |
• Mass size |
Statistical analysis
Results
Data
Biopsies revealing DCIS | Biopsies revealing invasive carcinoma | Total biopsies | Total patients | DCIS percentage (%) and the 95% confidence interval | |
---|---|---|---|---|---|
Age < 50
| 110 | 264 | 374 | 353 | 29.4 (25.0,34.2) |
50 < =Age < =64
| 170 | 398 | 568 | 538 | 29.9 (26.3, 33.8) |
Age > =65
| 132 | 401 | 533 | 493 | 24.8 (21.3,28.6) |
Total
| 412 | 1063 | 1475 | 1384 | 27.9 (25.7,30.3) |
Logistic regression models in different age groups
Risk factor | Beta | Odds ratio | 95% CI (Lower -Upper) | p value | |||||
---|---|---|---|---|---|---|---|---|---|
(Intercept) | −1.16 | 0.31 | 0.18 | - | 0.55 | 0.000 | *** | ||
Palpable lump
|
0.013
| ** | |||||||
No corresponding palpable mass | 0.00 | 1(referent) | |||||||
Missing | −0.30 | 0.74 | 0.05 | - | 10.55 | 0.824 | |||
Corresponding palpable mass | 0.80 | 2.22 | 1.12 | - | 4.41 | 0.022 | ** | ||
Family history
|
0.043
| ** | |||||||
None | 0.00 | 1(referent) | |||||||
Missing | −0.89 | 0.41 | 0.13 | - | 1.32 | 0.135 | |||
Strong | −0.32 | 0.73 | 0.33 | - | 1.59 | 0.422 | |||
Very strong | 1.66 | 5.24 | 0.84 | - | 32.78 | 0.076 | * | ||
Prior surgery
|
0.132
| ||||||||
Not present | 0.00 | 1(referent) | |||||||
Missing | −0.36 | 0.70 | 0.07 | - | 6.82 | 0.759 | |||
Present | 0.57 | 1.78 | 0.99 | - | 3.17 | 0.053 | * | ||
Principal mammography finding
|
<0.001
| *** | |||||||
Calcifications or Single dilated duct | 0.00 | 1(referent) | |||||||
Architectural distortion | 20.56 | Inf | 0.00 | - | Inf | 0.993 | |||
Associated calcifications | 2.16 | 8.67 | 3.39 | - | 22.14 | 0.000 | *** | ||
Missing | 2.10 | 8.14 | 3.88 | - | 17.09 | 0.000 | *** | ||
Asymmetry or Focal asymmetry | 2.94 | 18.87 | 3.79 | - | 93.87 | 0.000 | *** | ||
Mass | 3.04 | 20.93 | 9.20 | - | 47.65 | 0.000 | *** | ||
Developing asymmetry | 2.80 | 16.45 | 1.78 | - | 151.95 | 0.014 | ** | ||
Calcification distribution
|
0.008
| ** | |||||||
Not present | 0.00 | 1(referent) | |||||||
Linear or Segmental | −3.11 | 0.04 | 0.00 | - | 0.49 | 0.011 | ** | ||
Clustered | −0.69 | 0.50 | 0.22 | - | 1.18 | 0.113 | |||
Regional or Scattered | −1.94 | 0.14 | 0.01 | - | 2.83 | 0.202 | |||
Mass margins
|
<0.001
| *** | |||||||
None | 0.00 | 1(referent) | |||||||
Circumscribed | −2.51 | 0.08 | 0.01 | - | 0.45 | 0.004 | *** | ||
Ill-Defined | 0.19 | 1.21 | 0.46 | - | 3.20 | 0.703 | |||
Obscured | 0.10 | 1.10 | 0.11 | - | 11.31 | 0.935 | |||
Spiculated | 28.70 | Inf | 0.00 | - | Inf | 0.983 | |||
Mass shape
|
0.033
| ** | |||||||
None | 0.00 | 1(referent) | |||||||
Irregular | 1.91 | 6.78 | 0.78 | - | 58.79 | 0.083 | * | ||
Lobular or Oval | −0.13 | 0.87 | 0.24 | - | 3.16 | 0.838 | |||
Round | −15.53 | 0.00 | 0.00 | - | Inf | 0.987 | |||
Focal asymmetric density
|
0.077
| * | |||||||
Not present | 0.00 | 1(referent) | |||||||
Present | 1.63 | 5.10 | 0.54 | - | 47.77 | 0.154 |
Risk factor | Beta | Odds ratio | 95% CI (Lower -Upper) | p value | |||||
---|---|---|---|---|---|---|---|---|---|
(Intercept) | -1.367 | 0.255 | 0.16 | - | 0.41 | <0.001 | *** | ||
Principal mammography finding
|
<0.001
| *** | |||||||
Calcifications or Single dilated duct | 0 | 1(referent) | |||||||
Architectural distortion | 18.123 | Inf | 0 | - | Inf | 0.979 | |||
Associated calcifications | 1.911 | 6.757 | 3.04 | - | 15.03 | <0.001 | *** | ||
Missing | 0.562 | 1.754 | 0.95 | - | 3.23 | 0.072 | * | ||
Asymmetry or Focal asymmetry | 2.212 | 9.13 | 1.83 | - | 45.5 | 0.007 | *** | ||
Mass | 2.81 | 16.604 | 7.54 | - | 36.55 | <0.001 | *** | ||
Developing asymmetry | 18.049 | Inf | 0 | - | Inf | 0.991 | |||
Palpable lump
|
<0.001
| *** | |||||||
No corresponding palpable mass | 0 | 1(referent) | |||||||
Missing | 1.01 | 2.74 | 0.68 | - | 11.1 | 0.158 | |||
Corresponding palpable mass | 1.2 | 3.322 | 1.91 | - | 5.79 | <0.001 | *** | ||
Mass margins
|
<0.001
| *** | |||||||
None | 0 | 1(referent) | |||||||
Circumscribed | 0.529 | 1.697 | 0.14 | - | 20.5 | 0.677 | |||
Ill-Defined | 0.24 | 1.272 | 0.31 | - | 5.24 | 0.74 | |||
Obscured | 16.662 | Inf | 0 | - | Inf | 0.991 | |||
Spiculated | 2.6 | 13.463 | 3.03 | - | 59.76 | 0.001 | *** | ||
Prior surgery
|
0.05
| ** | |||||||
Not present | 0 | 1(referent) | |||||||
Missing | 0.729 | 2.074 | 0.97 | - | 4.42 | 0.059 | * | ||
Present | 0.627 | 1.871 | 1.07 | - | 3.28 | 0.029 | ** | ||
Mass shape
|
0.08
| * | |||||||
None | 0 | 1(referent) | |||||||
Irregular | 2.114 | 8.28 | 0.96 | - | 71.31 | 0.054 | * | ||
Lobular or Oval | 0.728 | 2.072 | 0.36 | - | 11.88 | 0.414 | |||
Round | 16.123 | Inf | 0 | - | Inf | 0.997 |
Risk factor | Beta | Odds ratio | 95% CI (Lower -Upper) | p value | |||||
---|---|---|---|---|---|---|---|---|---|
(Intercept) | −0.64 | 0.53 | 0.35 | - | 0.8 | 0.002 | *** | ||
Palpable lump
|
0
| *** | |||||||
No corresponding palpable mass | 0 | 1(referent) | |||||||
Missing | −0.68 | 0.51 | 0.16 | - | 1.6 | 0.246 | |||
Corresponding palpable mass | 1.21 | 3.36 | 1.79 | - | 6.32 | 0 | *** | ||
Principal mammography finding
|
0
| *** | |||||||
Calcifications or Single dilated duct | 0 | 1(referent) | |||||||
Architectural distortion | 1.95 | 7.05 | 0.75 | - | 65.98 | 0.087 | * | ||
Associated calcifications | 1.58 | 4.85 | 1.87 | - | 12.55 | 0.001 | *** | ||
Missing | 1.02 | 2.76 | 1.34 | - | 5.7 | 0.006 | *** | ||
Asymmetry or Focal asymmetry | 1.86 | 6.41 | 1.26 | - | 32.64 | 0.025 | ** | ||
Mass | 2.74 | 15.51 | 4.97 | - | 48.35 | 0 | *** | ||
Developing asymmetry | 16.5 | Inf | 0 | - | Inf | 0.997 | |||
Architectural distortion
|
0.063
| * | |||||||
Not present | 0 | 1(referent) | |||||||
Present | 1.78 | 5.91 | 0.67 | - | 52.13 | 0.11 | |||
Mass shape
|
0.09
| * | |||||||
None | 0 | 1(referent) | |||||||
Irregular | 15.83 | Inf | 0 | - | Inf | 0.986 | |||
Lobular or Oval | 0.09 | 1.1 | 0.23 | - | 5.21 | 0.787 | |||
Round | −19.53 | 0 | 0 | - | Inf | 0.996 | |||
Mass size
|
0.047
| * | |||||||
None | 0 | 1(referent) | |||||||
20-Oct | −0.97 | 0.38 | 0.03 | - | 4.61 | 0.447 | |||
20-50 | 1.7 | 5.47 | 1.17 | - | 25.69 | 0.031 | ** | ||
<10 | −0.58 | 0.56 | 0.19 | - | 1.63 | 0.287 | |||
> = 50 | −0.58 | 0.56 | 0.14 | - | 2.25 | 0.413 |