Table 3.

Analysis of the prevalence of mastitis in dairy cows at quarter-level

Quarter	No. examined	No. positive	Prevalence (%)	χ 2	p
Right hind	504	249	49.4	Ref
Left hind	504	223	44.2	2.7	0.101
Right fore	507	132	26.0	59.0	<0.001
Left fore	511	125	24.5	67.6	<0.001