Table 3.

Pain measures by sex and drug condition

	Female		Male
	Placebo	Naltrexone	Placebo	Naltrexone
CPT tolerance (s)
Rest	55.1 (9.4)	57.5 (9.4)	78.0 (7.4)	79.6 (7.5)
Stress	64.2 (11.4)	60.2 (9.8)	89.6 (9.0)	80.9 (7.8)
CPT MPQ-total
Rest	17.2 (1.4)	19.0 (1.6)	14.1 (1.1)	13.6 (1.2)
Stress	17.6 (1.3)	18.2 (1.4)	13.6 (1.0)	13.8 (1.1)
Heat pain threshold (°C)
Rest	43.4 (0.6)	42.7 (0.6)	43.7 (0.5)	43.6 (0.5)
Stress	43.0 (0.6)	43.2 (0.6)	44.3 (0.4)	43.8 (0.5)
Heat pain tolerance (°C)
Rest	48.0 (0.4)	47.8 (0.4)	49.1 (0.3)	49.0 (0.3)
Stress	47.9 (0.4)	48.2 (0.4)	49.3 (0.3)	49.1 (0.3)
Heat pain MPQ-total
Rest	19.0 (1.3)	18.9 (1.3)	15.3 (1.0)	15.2 (1.0)
Stress	17.8 (2.1)	19.6 (1.3)	17.4 (1.6)	14.9 (1.0)

Entries show mean and the standard error of the mean that are adjusted for smoking status and the order of task