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Table 2 Medicare general practitioner claims (national insurer) compared to self-reported general practitioner visits in the twelve months following discharge from rehabilitation (n = 751)

From: Empirical evidence of recall bias for primary health care visits

  0-6 Months 7-12 Months 0-12 Months (combined)
Medicare GP claims Self-reported GP visits Difference (Medicare – Self-reported) Medicare GP claims Self-reported GP visits Difference (Medicare – Self-reported) Medicare GP claims Self-reported GP visits Difference (Medicare – Self-reported)
Number of GP visits 3,441 4,653 −1,212 7,414 4,740 2,674 10,855 9,393 1,462
Median (range) 3 5 −1* 8 5 2* 13 10 2*
(0 to 29) (0 to 52) (−43 to 22) (0 to 65) (0 to 70) (−26 to 56) (0 to 76) (0 to 100) (−52 to 50)
Mean (SD) 4.6 6.2 −1.6 9.9 6.3 3.6 14.5 12.5 1.9
(5.0) (5.8) (CI −2.1 to −1.1) (8.7) (6.2) (CI 3.0 to 4.1) (10.3) (10.3) (CI 1.2 to 2.7)
p = <0.01 p = <0.01 p = <0.01
  1. GP general practitioner
  2. *Median of the difference