Table 3. Comparative calculation of IHA and protein array sensitivity.^#.

	week 0		week 12		week 52
Cut-off 1:160	IHA	protein array	IHA	protein array	IHA	protein array
positive	43	65	34	41	18	26
negative	32	10	16	9	28	20
sensitivity	57.3%	86.7%	68%	82%	39.1%	56.5%
p value	0.0001		0.1652		0.1436

^# Table shows the sensitivity of both techniques. Cut off for IHA titer was greater or equal 160. Shown are values for week 0, week 12 and week 52 p.a. Statistical analysis was performed using the Fisher's exact test. p values smaller than or equal 0.01 were assumed to differs significantly between both techniques.