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Table 4 Comparison of information on execution of lymph node dissection (A) and administration of radioiodine (B) between medical charts and administrative data sources

From: Combining data to perform population-based observational studies: know your sources. The case of thyroid cancer in Belgium

A.   Medical chart B.   Medical chart
   yes no total    yes no total
PAT yes 27 3 30 HIC yes 25 0 25
  no 3 16 19   no 5 19 24
  total 30 19 49   total 30 19 49
HIC yes 24 1 25 MDT yes 22 0 22
  no 6 18 24   no 8 15 23
  total 30 19 49   unknown 0 4 4
       total 30 19 49
  1. HIC health insurance companies; MDT multidisciplinary team meeting reports; PAT full text pathology reports