Table 4.

Comparison of daily intake of water versus each ethanol-containing test solution during Phases 1 and 2

		Phase 1 (Days 1–8)		Phase 2 (Days 9–11)
Test solutions	n	Wilcoxon test statistic	P-value	Wilcoxon test statistic	P-value
Water vs E	7	−28	0.016*	−28	0.016*
Water vs. E + SS	7	+12	0.375	−28	0.016*
Water vs. E + SSM	7	+28	0.016*	−28	0.016*
Water vs. E + SSM2	8	−18	0.250	−36	0.008*
Water vs. E + SSM4	8	+6	0.742	−36	0.008*

See Figure 2 for an illustration of the data and Table 1 for a key to the acronyms. For each rat, we determined median daily intake of water and test solution separately for Phases 1 and 2. Then, we compared median daily intake of water and test solution using Wilcoxon matched-pairs signed rank test. Because we conducted two Wilcoxon tests for each test solution (during Phases 1 and 2), we had to control the Type 1 error rate with Bonferroni correction (*P < 0.05/2 = 0.025).