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Table 1 Classification scheme for the Bayes factor \({BF}_{ab}\)

From: Bayesian updating: increasing sample size during the course of a study

\({BF}_{ab}\) Interpretation
>100 Extreme support for \({H}_{a}\)
30-100 Very strong support for \({H}_{a}\)
10-30 Strong support for \({H}_{a}\)
3-10 Moderate support for \({H}_{a}\)
1-3 Anecdotal support for \({H}_{a}\)
1 Support for neither hypothesis
1/3-1 Anecdotal support for \({H}_{b}\)
1/10-1/3 Moderate support for \({H}_{b}\)
1/10-1/30 Strong support for \({H}_{b}\)
1/30-1/100 Very strong support for \({H}_{b}\)
<1/100 Extreme support for \({H}_{b}\)