Table 7.

Agreement between physician and patient regarding CHD discussions.

Topic	kappa assuming independent observations			kappa using the bootstrap method
	$\widehat{\kappa }$	$\mathit{ASE}\left(\widehat{\kappa }\right)$	CIS	${\widehat{\kappa }}_B$	$\widehat{\mathit{SE}}\left({\widehat{\kappa }}_B\right)$	${\mathit{CR}}_B^S$	${\mathit{CR}}_B^P$	${\mathit{CR}}_B^{{\mathit{BC}}_a}$
Discussed CHD	0.551	0.076	(0.402, 0.700)	0.545	0.053	(0.441, 0.650)	(0.432, 0.648)	(0.440, 0.654)
MD recommended medication	0.400	0.083	(0.237, 0.563)	0.405	0.067	(0.275, 0.536)	(0.287, 0.541)	(0.284, 0.536)
MD recommended lifestyle change	0.492	0.076	(0.342, 0.641)	0.485	0.091	(0.305, 0.664)	(0.303 ,0.662)	(0.322 ,0.680)

Note: $\widehat{\kappa }$ denotes the kappa statistic assuming independence.

$\mathit{ASE}\left(\widehat{\kappa }\right)$ denotes the asymptotic standard error of kappa statistics assuming independence.

CI^S denotes the 95% confidence interval based on normal approximation assuming independence.

${\widehat{\kappa }}_B$ denotes the bootstrap kappa statistic.

$\widehat{\mathit{SE}}\left({\widehat{\kappa }}_B\right)$ denotes the bootstrap standard error estimate of bootstrap kappa statistic.

${\mathit{CI}}_B^S$ denotes the 95% bootstrap confidence interval based on normal approximation.

${\mathit{CI}}_B^P$ denotes the 95% bootstrap confidence interval based on percentiles.

${\mathit{CI}}_B^{{\mathit{BC}}_a}$ denotes the 95% bootstrap confidence interval based on BC_a.

The number of bootstrap replication B=1,000.

Analysis was performed using R (Version 2.15.1).