Table 2.
Bayesian analysis for the comparison of symbolic analysis parameters obtained at supine position and at different caffeine supplementation conditions.
| Experimental condition | Prior odds | Posterior odds | BF10, U | Probability % | |
|---|---|---|---|---|---|
| V0 | |||||
| PP | PC | 0.587 | 5.36 | 0.267m | 21.1 |
| PP | CC | 0.587 | 12.20 | 0.537a | 34.9 |
| PC | CC | 0.587 | 0.11 | 0.210m | 17.4 |
| V1 | |||||
| PP | PC | 0.587 | 0.25 | 0.185m | 15.6 |
| PP | CC | 0.587 | 0.12 | 0.280m | 21.9 |
| PC | CC | 0.587 | 0.26 | 0.218m | 17.9 |
| V2 | |||||
| PP | PC | 0.587 | 2.23 | 0.437a | 30.4 |
| PP | CC | 0.587 | 23.00 | 0.647a | 39.4 |
| PC | CC | 0.587 | 0.19 | 0.200m | 16.7 |
The posterior odds have been corrected for multiple testing by fixing to 0.5 the prior probability that the null hypothesis holds across all comparisons (Westfall, Johnson, & Utts, 1997). Individual comparisons are based on the default t test with a Cauchy (0, r = 1/sqrt(2)) prior. The “U” in the Bayes factor denotes that it is uncorrected (PP: Placebo–Placebo; PC: Placebo–Caffeine; CC: Caffeine–Caffeine). Letters indicate the outcome classified as: A = anecdotal; M = moderate; V = very strong; E = extreme favoring the alternative hypothesis; a = anecdotal; m = moderate favoring the null hypothesis.