Figure 3. Mean dose of ketorolac (mean+/-SD). At 0 and 24 h, the mean dosage of ketorolac taken by group A was higher than the dosage taken by groups B, C, and P (*P < 0.05). There was no difference in dosage among the other groups. At 4 h, the dosage for group A was higher than for group C (*P < 0.05). There was no difference in dosage among the other groups. At 8 h, group A took a higher dosage than groups B, C, and P (*P < 0.05), consumption in group B was higher than in groups C and P (sup o P < 0.05). There was no difference in consumption between groups C and P. At 12 h, consumption for group B was higher than for groups C and P (*P < 0.05). There was no difference in consumption among the other groups. Analysis of variance for each time point was carried out using Sheffe's test.