. 2016 Jan 8;4:2050312115622857. doi: 10.1177/2050312115622857

Table 3.

Kappa agreements for self-reported diabetes diagnoses (excluding gestational diabetes).

	Test study	Retest study	Consistency (%)^a	Kappa (95% CI)
Diabetes	Cases in 1991 (n)	Cases in 1998 (n)
	148	151	113/148 (76.4)	0.75 (0.70–0.81)
	Cases in 1991 (n)	Cases in 2005 (n)
	148	130	90/148 (60.8)	0.65 (0.58–0.71)
	Cases in 1998 (n)	Cases in 2005 (n)
	315	282	209/315 (66.3)	0.70 (0.66–0.74)

CI: confidence interval.a

$Consistency (%) = \frac{Number of diabetes diagnosis in both test and retest study}{Number of diabetes diagnosis in test study} \times 100 .$