Patient self-report and medical records: Measuring agreement for binary data

Article Figures & Data

Table 1

Contingency tables of data from the Hutterite Influenza Prevention Study³: A) fever, B) earache, C) cough, and D) chills.

A)		MEDICAL RECORD		B)		MEDICAL RECORD
A)		YES	NO	B)		YES	NO
SELF-REPORT	YES	18	6	SELF-REPORT	YES	15	4
	NO	40	112		NO	18	139

Total agreement = 0.74, κ = 0.31, Positive agreement = 0.44 Negative agreement = 0.83				Total agreement = 0.88, κ = 0.51, Positive agreement = 0.58 Negative agreement = 0.93

C)		MEDICAL RECORD		D)		MEDICAL RECORD
C)		YES	NO	D)		YES	NO
SELF-REPORT	YES	82	20	SELF-REPORT	YES	2	16
	NO	30	44		NO	11	147

Total agreement = 0.72, κ = 0.41, Positive agreement = 0.77 Negative agreement = 0.64				Total agreement = 0.85, κ = 0.05, Positive agreement = 0.13 Negative agreement = 0.92