Indirect calibration between clinical observers - application to the New York Heart Association functional classification system

Table 6 Agreement between the observers and between the observers and the ability estimated by the concurrent calibration

	Observer 1	Observer 2	Observer 4	Observer 5	Observer 6	Observer 7	Observer 8	Ability
Observer 1	---	82.89¹	70.72¹	65.40¹	72.24¹	59.32¹	62.36¹	0.76¹
Observer 2	0.68²	---	53.61¹	82.51¹	58.17¹	76.43¹	79.47¹	0.88¹
Observer 4	0.20²	0.09²	----	36.12¹	90.87¹	30.04¹	33.08¹	0.87¹
Observer 5	0.43²	0.69²	0.06²	---	40.68¹	93.92¹	96.96¹	0.88¹
Observer 6	0.21²	0.12²	0.00²	0.06²	---	38.4¹	42.21¹	0.89¹
Observer 7	0.33²	0.57²	0.01²	0.87²	0.05²	---	96.2¹	0.88¹
Observer 8	0.36²	0.62²	0.00²	0.94²	0.06²	0.92²	---	0.79¹
Ability	0.56²	0.80²	0.42²	0.83²	0.47²	0.77²	0.61²	---

ISSN: 1756-0500