The Framingham Heart Study criteria are 100% sensitive and 78% specific for identifying patients with congestive heart failure. Minor criteria are acceptable only if they cannot be attributed to another medical condition.

References
McKee PA, Castelli WP, McNamara PM, Kannel WB. The natural history of congestive heart failure: the Framingham study. N Engl J Med. 1971 Dec 23;285(26):1441-6.
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