Table 2.

The effect of oxycodone as compared to saline on the median (25%:75%) latency in seconds for dams to retrieve the first and last pup back to the nest following a 1h separation.

	PND3*		PND6		PND9
	First Pup	Last Pup	First Pup	Last Pup	First Pup	Last Pup
Saline (n=12)	32 (11:52)	179 (116:300)	41 (8:80)	179 (69:441)	75 (26:250)	203 (76:447)
Oxycodone (n=9)	145 (84:480)	447 (245:480)	119 (79:480)	405 (244:480)	111 (14:454)	241 (77:480)
Mann-Whitney U	12	19	26.5	29	53	53
P value	0.005	0.02	0.05	0.08	1.0	0.97

^*significant difference in latency to retrieve pups