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Table 4 Accuracy of ICD codesa in sampled patients

From: Validation of diagnosis codes to identify side of colon in an electronic health record registry

Accuracy of ICD codes, % (95% CI)

Left

Right

Transverse

Right/Transverse

Sensitivity

63 (52, 72)

49 (37, 62)

58 (29, 84)

52 (40, 63)

Specificity

92 (85, 96)

98 (93, 99)

98 (94, 99)

96 (90, 98)

Positive predictive value

89 (78, 95)

92 (76, 98)

64 (32, 88)

89 (76, 96)

Negative predictive value

72 (63, 79)

79 (72, 85)

97 (94, 99)

75 (68, 82)

  1. CI Confidence interval, ICD International Classification of Diseases
  2. aSee Table 5 in Appendix A