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Table 3 Correlation of Medicare general practitioner claims (national insurer) and self-reported general practitioner visits (n = 751)

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

  Medicare GP claims compared to self-reported GP visits 0 to 6 months Medicare GP claims compared to self-reported GP visits 7 to 12 months Medicare GP claims compared to self-reported GP visits 0 to 12 months Self-report GP visits 0 to 6 months compared to 7 to 12 months Medicare GP claims 0 to 6 months compared to 7 to 12 months
Correlation, Spearman 0.25 0.65 0.52 0.53 0.04
  p < 0.001 p < 0.001 p < 0.001 p < 0.001 p = 0.28
Measure of agreement, Kappa 0.03a 0.04a 0.03a 0.18a 0.07a
Number of occasions the data matches for the individual participant n (%) 70 (9.3) 67 (8.9) 52 (6.9) 208 (27.7) 91 (12.1)
  1. a = slight agreement (0.0 to 0.2); GP general practitioner