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Table 4 Comparison of self-report and administrative data on number of physician visits by levels of disease activity

From: Health service utilization in IBD: comparison of self-report and administrative data

Disease Activity Self-report Mean (standard error) Admin Data Mean (standard error) p-value§ Concordance Correlation Coefficient Pearson Correlation Coefficient (Bias Correction Factor Cb)
Consistently inactive (n = 77) 4.42a (0.45) 7.75b (0.83) <0.0001 0.455 0.629 (0.724)
Fluctuating (n = 71) 6.83 (0.78) 10.41 (0.91) <0.0001 0.543 0.619 (0.877)
Consistently active (n = 186) 8.24 (0.58) 12.88 (0.78) <0.0001 0.592 0.692 (0.855)
  1. §Correlated t-test
  2. a,bConsistently inactive and consistently active are statistically significantly different (p < 0.0001) by one-way ANOVA and Bonferroni multiple comparisons.