Table 4
Experimentally determined technical and safety parameters for comparing different equipment set-ups during thoracoscopy of calves chronically affected with BRD

Equipment set-up	VS^a	IQDa vs. c P = 0.001;b vs c P = 0.005	PSa vs. b P < 0,0001	RTP = 0.043	RLa vs. b P = 0.006
1 (n = 8)	3 (2–4)	1 (1–1)^a	3 (3–4)^a	3 (1–3)	2 (1–3)^a
2 (n = 5)	1 (1–1)	1 (1–1)^b	2 (2–4)	3 (2–4)	1 (1–3)
3a (n = 9)	1 (1–1)	3 (3–3)	2 (2–2)^b	2 (1–4)	1 (1–1)^b
3b (n = 4)	1 (1–1)	2 (2–3)^c	2 (2–2)	2.5 (1–4)	1 (1–1)