TABLE 3.

Agreement assessment between blood typing results obtained with different pairs of naturally occurring alloantibodies (NOAb) [reagent] determined by McNemar's test, percentage of agreement, Cohen's kappa agreement, and Gwet's coefficient in Quebec, Canada (2017‐2019)

Reagent 1	Reagent 2	Blood typing results				P‐value McNemar	% agreement	Kappa		Gwet
		neg/neg	neg/pos	pos/neg	pos/pos			Estimate	95% CI	Estimate	95% CI
NOAb1	NOAb2	11	13	130	2	<.001	8.3	−.18	(−.27, −.08)	−.83	(−.92, −.73)
NOAb1	NOAb3	12	9	91	14	<.001	20.6	−.12	(−.21, −.02)	−.59	(−.73, −.45)
NOAb1	NOAb4	0	12	23	58	.06	62.4	−.2	(−.29, −.12)	.46	(.27, .65)
NOAb1	NOAb5	3	9	0	67	<.01	88.6	.36	(.06, .66)	.86	(.77, .96)
NOAb1	NOAb6	0	18	52	53	<.001	43.1	−.28	(−.39, −.17)	.04	(−.17, .25)
NOAb1	NOAb7	0	11	32	31	<.01	41.9	−.28	(−.43, −.14)	.01	(−.26, .28)
NOAb2	NOAb3	87	14	7	6	.13	81.6	.26	(.03, .49)	.76	(.64, .87)
NOAb2	NOAb4	22	51	0	8	<.001	37	.08	(.02, .14)	−.22	(−.45, .01)
NOAb2	NOAb5	2	69	1	7	<.001	11.4	−.02	(−.07, .03)	−.77	(−.91, −.62)
NOAb2	NOAb6	50	61	2	10	<.001	48.8	.09	(.00, .17)	.07	(−.12, .27)
NOAb2	NOAb7	31	36	1	6	<.001	50	.1	(−.01, .21)	.1	(−.15, .36)
NOAb3	NOAb4	18	41	0	13	<.001	43.1	.14	(.05, .22)	−.13	(−.37, .10)
NOAb3	NOAb5	1	49	2	6	<.001	12.1	−.07	(−.17, .03)	−.75	(−.93, −.56)
NOAb3	NOAb6	40	45	3	14	<.001	52.9	.15	(.03, .27)	.12	(−.09, .32)
NOAb3	NOAb7	20	26	3	4	<.001	45.3	0	(−.16, .17)	0	(−.31, .30)
NOAb4	NOAb5	0	9	2	26	.03	70.3	−.1	(−.21, .02)	.6	(.35, .85)
NOAb4	NOAb6	22	0	10	49	<.01	87.7	.73	(.57, .88)	.78	(.64, .91)
NOAb4	NOAb7	7	0	5	20	.03	84.4	.64	(.36, .91)	.73	(.50, .96)
NOAb5	NOAb7	0	2	32	40	<.001	54.1	−.05	(−.13, .02)	.29	(.05, .53)
NOAb5	NOAb6	0	35	3	41	<.001	51.9	−.08	(−.16, .01)	.24	(.00, .48)
NOAb6	NOAb7	32	0	0	42	NE	100	1	NE	1	NE

Abbreviations: FEA, feline erythrocyte antigens; NE, not estimated; neg, negative; pos, positive.