Table 2 Univariate analyses for patient demographics and characteristics.
From: The impact of changes in breast density over time on breast cancer risk
Variables | Case group (n = 253) | Control group (n = 390) | p-value |
|---|---|---|---|
Age (mean) | 53.37 (± 6.60) | 53.16 (± 6.51) | 0.70 |
BMI (mean) | 29.28 (± 2.05) | 29.66 (± 2.42) | 0.04 |
Menopause status | 152 (60%) | 165 (42%) | 0.001 |
Family history status | 68 (27%) | 93 (24%) | 0.44 |
Number of births (mean) | 2.09 (± 1.32) | 2.21 (± 1.38) | 0.28 |
Number of months between mammograms (mean) | 14.21 (± 3.41) | 14.32 (± 3.24) | 0.39 |
Mammogram density type at first visit | 0.001 | ||
B | 0 | 0 | |
C | 88 (35%) | 182 (47%) | |
D | 165 (65%) | 208 (53%) | |
Mammogram density type at last visit | 0.001 | ||
B | 133 (52%) | 310 (79%) | |
C | 108 (43%) | 78 (20%) | |
D | 12 (5%) | 2 (1%) |
