Reliability of diagnostic coding in intensive care patients

Table 3 Agreement between the three coders for the 'father' codes of septicemia and shock

	Initial versus external coder 1		Initial versus external coder 2		Between the two external coders
	Kappa	95% CI	Kappa	95% CI	Kappa	95% CI
A41-, septicemia	0.69	0.47–0.92	0.71	0.47–0.94	0.77	0.58–0.96
R57-, shock	0.60	0.38–0.81	0.51	0.31–0.70	0.55	0.36–0.74
A41- or R57-	0.70	0.54–0.86	0.49	0.53–0.85	0.73	0.58–0.87

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