. Author manuscript; available in PMC: 2012 Aug 1.

Published in final edited form as: Anesthesiology. 2011 Aug;115(2):322–333. doi: 10.1097/ALN.0b013e31821d6c81

Table 5.

Associations between Anesthesia Claim and “Best” Chart Times (N = 14,370)

	Value	95% CI	P-value
Pearson Correlation	0.89	0.85, 0.92	< 0.0001
Spearman Correlation	0.94	0.94, 0.95	< 0.0001
Kendall Correlation (τ)	0.85	0.85, 0.86	< 0.0001
Probability of Concordance^*	0.93	0.92, 0.93	< 0.0001
Median Absolute Difference (min)	5.0	5.0, 5.5

Probability of Concordance = (1 + Kendall τ)/2