Table 9. Linear regression models for predicting the trimming loss of pork belly

Items	Observation	r2	Adjusted r2	RMSE
BFT 5th TV	107	0.270	0.263	0.546
BFT 5th TV with skin	107	0.195	0.187	0.633
BFT 9th TV	107	0.271	0.264	0.477
BFT 9th TV with skin	107	0.259	0.252	0.551
BFT 13th TV	107	0.286	0.279	0.424
BFT 13th TV with skin	107	0.293	0.287	0.454
BFT 6th LV	107	0.116	0.107	0.401
BFT 6th LV with skin	107	0.133	0.125	0.412

RMSE, root mean square error; BFT, backfat thickness; TV, thoracic vertebrae; LV, lumber vertebrae.