Figure 2.

Kaplan–Meier survival curves. Shown are the survival curves of the Polish cohort for up to 5 years related to intensity or per cent positivity of Osteopontin-c or Osteopontin–exon 4. Of note, due to the design chosen for the Swedish breast cancer material (case-control design, where controls were sampled by incidence density sampling) it is not possible to calculate Kaplan–Meier curves. The mean time from diagnosis to recurrence for the Swedish patients was 1238 days for Osteopontin-c nuclear intensity 0, 1181 days for 0.5–1, 1130 days for 1.5–2 and 1081 days for 2.5–3.