. Author manuscript; available in PMC: 2010 Jan 28.

Published in final edited form as: Neuropsychopharmacology. 2007 Nov 28;33(9):2139–2147. doi: 10.1038/sj.npp.1301623

Table 3.

F-Values and Degrees of Freedom for Analyses of Responses During Antagonist Tests

Experiment		Nicotine-seeking^a		VS-seeking^b

		df	F	df	F
MPEP dose
	Group	1, 15	11.67^**	2, 24	7.15^**
1	Dose	3, 45	15.77^**	3, 72	17.18^**
	Group × dose	3, 45	0.77	6, 72	3.09^**
MPEP+NIC
	Group	2, 27	18.03^**	2, 23	7.65^**
2	Test	2, 54	48.57^**	2, 46	9.53^**
	Group × test	4, 54	4.21^**	4, 46	8.15^**
MTEP dose
	Group	2, 19	4.78^*	2, 19	6.00^**
3	Dose	3, 57	25.23^**	3,57	41.30^**
	Group × dose	6, 57	0.34	6, 57	5.34^**
MTEP+NIC
	Group	2, 25	17.22^**	2, 25	6.95^**
4	Test	2, 50	16.86^**	2, 50	5.48^**
	Group × test	4, 50	0.67	4, 50	3.73^**

^**

p ≤ 0.01,

p ≤ 0.05.

Includes responses on the lever associated with nicotine infusion, 2-lever and NIC+VS groups for Experiment 1 (MPEP dose) and 2-lever, NIC+VS, and NIC-only groups in Experiment 3 (MTEP Dose).

Includes responses that result in VS presentation (2-lever, NIC+VS, and VS-only groups). SAL-only group was not included in this phase of Experiment 2.