Table 4.

Results of the final models from the stepwise multiple linear regression analyses

	B	SE	p	R2		B	SE	p	R2
Trainee perspective
OOKS changea				0.110	OOAS changec				0.163
Training lengthb	0.07	0.03	0.005		Training lengthb	0.01	0.00	0.001
Trainer perspective
OOKS changea				0.159	OOAS changec				0.214
Training lengthb	0.06	0.03	0.021		Training lengthb	0.01	0.00	0.005
Training experience	2.44	1.22	0.049		Training Experience	0.25	0.12	0.048
Observer perspective
OOKS changea				0.128	OOAS changec				0.163
Trainer Adherenced	0.69	0.22	0.003		Trainer Adherencee	–	–	–
Training lengthb	–	–	–		Training lengthb	0.01	0.00	0.001

B unstandardized regression coefficient; SE standard error

^aChange in Opioid Overdose Knowledge Scale (OOKS) sum scores from pre- to post-training

^bLength of the training session in minute

^cChange in Opioid Overdose Attitudes Scale (OOAS) mean scores from pre- to post-training

^dTrainees’ previous experience with training (have/have not received OEND before

^eAdherence of the trainer to the protocol rated by the independent observer