Table 1 Baseline Characteristics of DCIS and Control Groups
|  |  | DCIS group N = 13,740 N (%) | Control group N = 41,220 N (%) | P value |
|---|---|---|---|---|
Age | Mean (SD) | 47.68 (9.68) | 47.68 (9.68) | 1.000 |
Hypertension |  | 2179 (15.86) | 5907 (14.33) | < 0.001 |
DM | Â | 692 (5.04) | 1860 (4.51) | 0.0115 |
Dyslipidemia |  | 1479 (10.76) | 2938 (7.13) | < 0.0001 |
CCI | Mean (SD) | 2.64 (1.42) | 1.73 (1.17) | < 0.0001 |
Income by quartile | Q1 | 3431 (24.97) | 12,606 (30.58) | < 0.0001 |
Q2 | 2738 (19.93) | 9248 (22.44) | Â | |
Q3 | 3163 (23.02) | 9351 (22.69) | Â | |
Q4 | 4408 (32.08) | 10,015 (24.30) | Â | |
Urban area residence |  | 7377 (53.69) | 19,514 (47.34) | < 0.0001 |