Table 3.

Mean results presented as sensitivity, specificity and accuracy in percent, including ± standard deviation (SD), calculated from 30 randomized and double-blind experimental searches carried out on trees and untreated wooden pallets in field condition between 26th of July to 10th of July 2020 at the University of Southeast Norway and forest areas in close vicinity of the University including both invasive and native wood borers. A dog`s response to a sample could be either; TP true positive response, FP false positive response, TN true negative response and FN false negative response. CR total number of correct responses, ICR total number of incorrect responses, and TOT R total number of responses.

Dog	TP	FP	TN	FN	CR	ICR	TOTR	Sensitivity (%) ± SD	Specificity (%) ± SD	Accuracy (%) ± SD
Akira	56	6	87	1	143	7	150	98.5 ± 3.7	93.9 ± 4.9	95.6 ± 2.5
Chilli	52	11	83	4	135	15	150	92.1 ± 13.7	89.3 ± 6.0	90.1 ± 7.2
SUM	108	17	170	5	278	22	300	–	–	–
MEAN	–	–	–	–	–	–	–	95.3 ± 10.1	91.6 ± 5.8	93.1 ± 5.8