Inter-rater reliability of data elements from a prototype of the Paul Coverdell National Acute Stroke Registry

BMC Neurology

Table 4 Inter-rater reliability for medical history, and select in-hospital diagnostic procedures, and treatments.

Variable (Item Number)	Dichotomous response option	N	PI*	Kappa (95% LCL)†	BI‡
Past Medical History (9.1)	Stroke/TIA	104	-0.23	0.59 (0.44)	-0.04
	Myocardial infarction	104	-0.71	0.77 (0.59)	0.02
	CAD	104	-0.26	0.61 (0.45)	-0.05
	AF	104	-0.64	0.70 (0.52)	0.01
	Hypertension	104	0.38	0.73 (0.59)	0.04
	Dyslipidemia	104	-0.40	0.72 (0.58)	0.04
	Diabetes	104	-0.48	0.80 (0.67)	0.04
	Smoking	104	-0.59	0.62 (0.43)	0.03
AF present in hospital (10.1)	Yes	104	0.63	0.59 (0.40)	0.07
Anti-thrombotic therapy initiated (10.4)	Within 24 hours	104	0.53	0.55 (0.37)	0.09
DVT prophylaxis initiated (10.6)	Within 48 hours	104	-0.49	0.43 (0.24)	0.11
Screening for dysphagia (10.7)	Yes	104	-0.32	0.64 (0.48)	0.05

* PI = Prevalence Index (see Table 1 footnote for interpretation). † 95% LCL = 95% Lower Confidence Limit. ‡ BI = Bias Index (see Table 1 footnote for interpretation). TIA = transient ischemic attack, CAD = coronary heart disease, AF = atrial fibrillation, DVT = deep vein thrombosis.

ISSN: 1471-2377