Table 3.

Concordance of comorbidity codes

Comorbidity	Kappa value	Sensitivity	Specificity	Positive predictive value	Percent of cases
Diabetes	0.86	86.5%	98.7%	89.4%	11.2
Chronic lung disease	0.75	76.9%	96.7%	80.8%	14.7
Coronary artery disease	0.73	76.8%	97.2%	73.8%	9.6
Congestive heart failure	0.59	94.4%	98.4%	43.6%	2.9
Obesity	0.55	76.4%	91.8%	49.2%	14.6
Prior myocardial infarction	0.51	54.8%	98.3%	51.1%	3.3
Peripheral arterial disease	0.47	50.0%	99.2%	45.0%	1.5
History of thromboembolism	0.46	86.4%	96.9%	31.1%	4.5