Table 1.

Change in ratings (Mean and SD) of pain intensity and unpleasantness of heat administered before and during the infusion of naloxone or saline.

	Meditation + naloxone	Control + naloxone	Meditation + saline	Control + saline
Pain intensity before infusion (pre)	4.62 (1.45)	4.11 (1.63)	3.44 (1.78)	4.78 (2.51)
Pain intensity during infusion (post)	3.53 (1.58) N = 20 p = .000*	4.40 (1.64) N = 18 p = .197	2.78 (1.64) N = 20 p = .003*	5.33 (2.44) N = 20 p = .012*
Pain unpleasantness before infusion (pre)	4.69 (1.64)	3.88 (1.59)	3.54 (2.11)	5.01 (2.57)
Pain unpleasantness during infusion (post)	3.11 (1.56) N = 20 p = .000*	4.40 (1.62) N = 18 p = .073	2.05 (1.16) N = 20 p = .000*	5.45 (2.54) N = 20 p = .107

^*pairwise comparison between pre and post ratings, p < 0.0125 (Bonferroni correction for four groups)