Table 3.

Agreement between self-report of heart failure and objective measures of heart failure, The Atherosclerosis Risk in Communities (ARIC) Study, 2005–2012

			Administrative claimsb
	Physician confirmed heart failure (N = 379)	ARIC-classified heart failurea (N = 11,846)	Heart failure hospitalizationsc (N = 9,347)	Heart failure hospitalizations and outpatient visitsd (N = 9,347)
	% (95% CI)	% (95% CI)	% (95% CI)	% (95% CI)
Verification e	60.9 (56.0, 65.9)	49.5 (46.0, 53.1)	45.0 (41.1, 48.8)	60.9 (57.1, 64.6)
Sensitivity	–	38.5 (35.4, 41.6)	34.5 (31.3, 37.8)	28.4 (26.1, 30.9)
Specificity	–	96.4 (96.1, 96.8)	95.8 (95.3, 96.2)	96.8 (96.4, 97.2)
Positive Predicted Value	–	49.5 (45.9, 53.1)	45.0 (41.3, 48.9)	60.9 (57.0, 64.6)
Kappa	–	0.39 (0.35, 0.42)	0.34 (0.31, 0.37)	0.32 (0.29, 0.35)
PABAK	–	0.83 (0.82, 0.85)	0.81 (0.79, 0.82)	0.73 (0.71, 0.75)

Abbreviations: Prevalence and biases adjusted kappa (PABAK)

Confirmed heart failure: Physician confirmed heart failure N = 231; ARIC-classified heart failure N = 379; hospitalized heart failure identified from administrative claims N = 292; hospitalized and outpatient heart failure identified from administrative claims N = 395 Prevalence: Self-reported heart failure (6.9%); ARIC-classified heart failure (8.8%); hospitalized heart failure identified from administrative claims (9.1%); hospitalized and outpatient heart failure identified from administrative claims (14.9%)

^aDefinite and probable acute decompensated heart failure and chronic stable heart failure ascertained from reviewed abstracted medical records

^bCenters for Medicare and Medicaid Services Medicare claims

^cInternational Classification of Disease, 9^th Edition Clinical Modification (ICD-9-CM) code 428.x in any position present in the hospital record

^dICD-9-CM 428.x in any position present in the hospital record or ICD-9-CM 428.x present in the outpatient record

^eConfirmed heart failure among self-reporters of heart failure