Tumor stage ALNM 1993 p 1993
    50-59 y   60-69 y
Stage Ia-b 0 14 n.s. 19
≤10 mm   21%   24%
Stage Ic 0 25 <0.02 47
10–20 mm   38%   59%
Stage IIA 1–3 18 0.001 7
10–20 mm   27%   9%
Stage IIB >3 8 n.s. 5
20–50 mm   12%   6%
Stage III <9 1 n.s. 2
>50 mm   2%   2%
Σ   66   80
ALNM, axillary lymph node metastasis
Table 4: Distribution of tumor stages of the two study groups in 1993.