Table 1.

Characteristics of the Swedish breast cancer samples at diagnosis

CharacteristicBreast cancer patients, n
Age at diagnosis (y), median (range)54.3 (27.1-75.9)
Distant metastasis
    Negative770
    Positive12
Regional lymph node metastasis
    Negative574
    Positive237
Stage at diagnosis
    010
    I421
    II320
    III21
    IV13
Histologic grade
    Grade 1142
    Grade 2322
    Grade 3250
Estrogen receptors
    Negative146
    Positive358
Progesterone receptor
    Negative165
    Positive275
Tumor size (mm)
    In situ9
    <20510
    21-50223
    >5019