Table 2

The accuracy of ICD9, HITEx and the combinations of ICD9 and HITEx for principal diagnosis and co-morbidity extraction.

ICD9 (Sens/Spec)

HITEx (Sens/Spec)

ICD9 and HITEx (Sens/Spec)

ICD9 or HITEx (Sens/Spec)

Exclude Insufficient Data

Principal

72.52%/90.91%

76.69%/86.99%

56.39%/96.75%

92.42%/80.99%

Co-morbidity

14.81%/91.12%

70.37%/88.79%

11.11%/98.60%

74.07%/81.31%

Insufficient Data = Yes

Principal

60.22%/90.91%

63.93%/86.99%

45.90%/96.75%

78.02%/80.99%

Co-morbidity

11.11%/90.53%

39.68%/87.24%

04.76%/98.77%

46.03%/37.86%

Insufficient Data = No

Principal

72.52%/85.38%

76.69%/82.08%

56.39%/92.49%

92.42%/74.85%

Co-morbidity

11.11%/90.32%

66.67%/86.38%

07.41%/98.57%

70.37%/78.14%

Zeng et al. BMC Medical Informatics and Decision Making 2006 6:30   doi:10.1186/1472-6947-6-30