Table 1.

Statistical results for Skilling–Mack (SM) rank ANOVA test for unbalance designed comparing differences between sedation scores before (Pre) and 1 h after (Post) administration of trazodone at 5 mg/kg PO (T), gabapentin at 10 mg/kg PO (G), their combination (TG) or placebo (control)

Comparison	SM statistic	P value	DF	Total observations
Overall test	11.96	0.0078	3	68
C vs G	2.57	0.108
C vs T	4.26	0.038
C vs TG	8.64	0.0032
G vs T	0.285	0.592
T vs TG	2.57	0.108
G vs TG	1.66	0.196

A P value <0.05 was considered statistically significant

DF = degree of freedom; G = gabapentin group; T = trazodone group; TG = combined gabapentin/trazodone group