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Table 3 Probability of death of patients from the two trial arms, sorted by tumour size, at different follow-up times (95% confidence intervals in parenthesis)

From: Comparative benefit from small tumour size and adjuvant chemotherapy: clues for explaining breast cancer mortality decline

  Years of follow-up
5 10 15
Controls, T1 0.26 (0.20-0.33) 0.47 (0.39-0.55) 0.64 (0.56-0.72)
Controls, T2/T3 0.38 (0.31-0.46) 0.58 (0.49-0.66) 0.68 (0.60-0.76)
CMF, T1 0.22 (0.16-0.28) 0.41 (0.33-0.48) 0.56 (0.48-0.64)
CMF, T2/T3 0.33 (0.26-0.40) 0.51 (0.44-0.59) 0.61 (0.53-0.68)