Table 3. Univariate analysis on factors associated with positivity for coccidia on farms producing free-range chickens in the state of Paraíba, Brazil.

Variable		farms (n)	+ farms (%)	p
Cleaning of facilities				0.050
	Yes	51	34 (66.6)
	No	49	41 (83.7)
Cleaning of feeders				0.127
	Yes	41	34 (82.9)
	No	59	41 (69.5)
Cleaning of drinkers				0.127
	Yes	50	40 (80)
	No	50	35 (70)
Feed				0.128
	Corn	41	33 (80.5)
	Leftover food	37	30 (81.1)
	Balanced feed	40	31 (77.5)
	Mixed	13	11 (84.6)
Feeding container				0.029
	Bowl	64	47 (73.4)
	Floor	34	28 (82.3)
	Feeder	2	0 (0.0)
Weather when most sick				0.040
	Rainy	72	50 (69.4)
	Dry	28	25 (89.3)
Rearing system				0.174
	Extensive	79	56 (70.8)
	Intensive	19	17 (89.5)
	Semi-intensive	2	2 (100)