Effectiveness of alternative measures to reduce antimicrobial usage in pig production in four European countries

Table 3 Comparison of median treatment incidences (TI) for different age categories before and after intervention (n = 67)

Parameter	Median before intervention (Q25; Q75)	Median after intervention (Q25; Q75)	p-value^a	Difference in percentage (%)
TI suckling pigs	279.9 (158.0; 484.6)	176.2 (80.2; 391.7)	< 0.001	− 37
TI weaned pigs	568.0 (113.1;1072.3)	261.2 (54.4; 573.1)	< 0.001	−54
TI fattening pigs	8.0 (0.8;37.7)	7.7 (0.8; 44.0)	0.89	−3
TI200d	247.3 (92.7; 451.8)	160.2 (59.7; 303.6)	< 0.001	−35
TI breeding pigs	14.0 (4.5; 32.0)	17.1 (4.2; 45.3)	0.5	+ 18

^a Wilcoxon signed rank test (n = 67 farrow-to-finish herds). Significant (p < 0.05) results are highlighted in bold

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