Table 2.

Estimated mean Faecal Egg Count Reduction following ivermectin treatment with associated confidence intervals by stud farm, sex and age

Study farm		1	2	3	5	7	By variable across stud farms
Foals age (months)	3	42.4 [− 28.63 to 77.0]	93.2 [10.84 to 100.0]	N/A	96.2 [95.495 to 100.0]	N/A	72.2 [35.5 to 94.1]
	4	69.7 [27.6 to 99.6]	82.1 [42.31 to 100.0]	72.9 [50.0 to 100.0]	N/A	N/A	72.3 [38.3 to 95.6]
	5	60.0 [43.0 to 89.5]	35.4 [14.55 to 56.5]	− 18.6 [− 45.349 to 50.0]	85.2 [72.727 to 100.0]	95.6 [90.476 to 100.0]	50.80 [32.7 to 69.0]
	6	61.4 [36.158 to 86.3]	16.3 [0.745 to 39.7]	49.2 [− 20.38 to 88.7]	− 62.5 [− 333.3 to 100.0]	N/A	46.5 [22.2 to 63.5]
Foals sex	Female	50.4 [28.1 to 70.6]	62.9 [14.2 to 87.8]	21.7 [− 35.9 to 63.1]	89.3 [78.6 to 100.0]	95.5 [91.4 to 100.0]	55.8 [36.7 to 71.8]
	Male	75.9 [31.0 to 100.0]	31.8 [14.7 to 58.3]	82.1 [67.3 to 98.3]	84.9 [− 333.3 to 100.0]	N/A	66.7 [40.9 to 81.9]
By farm across age and sex		57.0 [36.68 to 73.1]	56.8 [19.61 to 79.0]	44.0 [4.51 to 75.3]	86.6 [45.79 to 96.6]	96.9 [93.02 to 100.0]