(b) Retention memory

Covariates	Coef.	Std. err.	t	P > |t|	[95% conf. interval]
Species	−2.045101	.7652448	−2.67	0.023	−3.750172	−.3400288
Dose	−1.358647	.8065987	−1.68	0.123	−3.155861	.4385665
Quality	.5416233	.2248974	2.41	0.037	.0405206	1.042726
Anaesthetic used	2.045101	.7652448	2.67	0.023	.3400288	3.750172
Injury model	−.5074523	.9452993	−0.54	0.603	−2.61371	1.598806
Statins
Atorva	.4747928	1.355065	0.35	0.736	−2.729427	3.679012
Lova	−.4478023	1.743837	−0.26	0.805	−4.571322	3.675718
Prava	−2.709569	1.71473	−1.58	0.158	−6.764262	1.345123
Simva	.9555847	1.387517	0.69	0.513	−2.325371	4.23654