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Table 5 Change of odds ratio after adjustment according to ER status

From: Response to neoadjuvant chemotherapy based on pathologic complete response in very young patients with ER-positive breast cancer: a large, multicenter, observational study

  pCR rate (%) OR (95% CI) PI-Adjusted OR (95% CI)
Age<35 35≤Age<50
ER-positive (N = 147) (N = 901)   
4.8 4.1 1.17 (0.51–2.67) 0.41 (0.05–3.19)
ER-negative (N = 134) (N = 663)   
19.4 11.2 1.92 (1.17–3.13) 2.54 (1.27–5.08)
  1. ER estrogen receptor, pCR pathologic complete response, OR odds ratio, CI confidence interval, PI proliferative index