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Table 2 Correlation of methods for adherence measurement

From: Adherence evaluation of endocrine treatment in breast cancer: methodological aspects

  Self-report (n = 186) Physician rating (n=211) Prescription refill (n=121) Plasma concentration (n=223)
  r p r p r p r p
Self-report 1 - 0.369 <0.001* 0.189 0.050* 0.223 0.002*
Physician rating    1 - 0.243 0.006* 0.265 <0.001*
Prescription refill      1 - 0.251 0.005*
Plasma concentration        1 -
  1. *indicates significant correlation (p<0.05).