Table 2. Measurement of postoperative pain .

Evaluation (h)	Nicotine (n=50)		Placebo (n=50)		P value a
	Mean±SD	Median	Mean±SD	Median
0	5.32 ± 1.46	5	4.86 ± 1.60	5	0.13
6	4.04 ± 1.67	4	4.14 ± 1.32	4	0.74
12	2.72 ± 1.34	2	2.80 ± 1.22	2	0.75
24	2.04 ± 1.12	2	1.68 ± 0.86	2	0.07

^a Student t test with equal variances