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Table 3 Comparison of additional symptoms as recorded in the case–control study (N = 34) versus in medical records for the same patients

From: Reliability of medical records in diagnosing inflammatory breast cancer in Egypt

  Presence of palpable mass Ulceration Palpable axillary lymph nodes
Case–control study Case–control study Case–control study
Yes No Yes No Yes No
Medical records
 Yes 16 4 3 1 16 1
 No 11 3 2 28 12 5
  Sensitivity = 0.59 Sensitivity = 0.6 Sensitivity = 0.57
Specificity = 0.43 Specificity = 0.97 Specificity = 0.83
p = 0.07 p = 0.56 p = 0.0023
  1. This table excludes the 6 cases from the case–control study that had no medical records
  2. p-values are derived from McNemar’s tests