Table 6.

Change in gross margin and antimicrobial use (AMU) when comparing the historical data and the observational data.

	Δ Gross margin		Δ AMU
Farm ID	(€)	(%)	(TI1000)	(%)
1	359	32	−41	−20
2	−394	−26	−60	−36
3	−295	−18	39	19
4	294	23	−58	−41
5	545	24	45	99
6	−42	−2	−307	−362
7	−413	−25	−1	−1
8	830	42	53	57
9	648	64	31	32
10	639	41	−2	−1
11	−299	−24	−230	−57
12	243	20	−57	−60
13	408	23	−34	−26
14	783	56	−5	−4
15	−399	−28	13	17
16	−569	−25	7	5
17	547	78	−39	−18
18	580	43	−36	−15
19	490	46	67	34
20	−1,149	−67	−61	−31
Average (Std. deviation)	140 (546)	14	–34 (91)	−20