Table 2.

Agreement between the two external coders for the most frequently selected diagnoses

	Number	Kappa	95% CI
J960, acute respiratory failure	63	0.42	0.23–0.61
J159, bacterial pneumonia, unspecified	22	0.49	0.22–0.76
R402, coma, unspecified	21	0.82	0.63–1.00
I501, left ventricular failure	17	0.67	0.42–0.94

CI, confidence interval.