Table 3. The Average Consumption of Fentanyl (µg) in the Ketorolac, Bupivacaine, and Placebo Groups 24 Hours After Surgery ^a.

Variables (h)	Placebo Group	Bupivacaine Group	Ketorolac	P Value (Within Groups)
1	5.4 ± 1.1	6.0 ± 2.2	5.4 ± 1.2	< 0.001
6	33.9 ± 5.9	29.8 ± 5.6	27.4 ± 3.9
12	28.9 ± 7.3	25.7 ± 4.0	23.8 ± 4.5
18	17.3 ± 4.5	20.4 ± 4.7	21.5 ± 4.4
24	14.3 ± 3.8	17.8 ± 5.0	17.5 ± 5.2
P value (between groups)	< 0.001

^a Values are expressed as mean ± SD.