From: Interaction between drug and placebo effects: a cross-over balanced placebo design trial
 | Untransformed | Log-transformed | |||||||
---|---|---|---|---|---|---|---|---|---|
 | AUC14 (μg/ml*hr) | AUC∞ (μg/ml*hr) | Cmax (μg/ml) | Tmax (hr) | t 1/2 (hr) | AUC14 (μg/ml*hr) | AUC∞ (μg/ml*hr) | Cmax (μg/ml) | t 1/2 (hr) |
Described as Caffeine* | 58.4 (4.6) | 82.8 (9.6) | 7.2 (0.5) | 2.9 (0.3) | 6.3 (0.5) | 4.01 (0.08) | 4.30 (0.10) | 1.93 (0.07) | 1.77 (0.08) |
Described as Placebo* | 56.2 (4.3) | 77.4 (8.7) | 7.1 (0.4) | 2.7 (0.2) | 5.92 (0.5) | 3.97 (0.07) | 4.24 (0.10) | 1.93 (0.06) | 1.71 (0.08) |
ANOVA†| 2.33 [0.35 to 4.31] P = 0.02 | 5.43 [1.62 to 9.23] P = 0.008 | 0.06 [-0.25 to 0.37] P = 0.70 | 0.22 [-0.33 to 0.77] P = 0.42 | 0.40 [0.12 to 0.68] p = 0.007 | 1.04 [1.00 to 1.07] P = 0.05 | 1.07 [1.02 to 1.11] P = 0.004 | 1.00 [0.94 to 1.06] P = 0.99 | 1.07 [1.02 to 1.12] P = 0.01 |
Wilcoxon Signed Ranks‡ | P = 0.02 | P = 0.006 | P = 0.61 | P = 0.46 | P = 0.007 |  |  |  |  |