I am conducting a study in which I am reporting results of hypothesis tests conducted in a frequentist framework, and also some additional analyses conducted in a Bayesian framework.

Should I use upper case (capital) $P$ or lower case $p$ to denote $P$/$p$-values and Bayesian probabilities?

* "p" for both frequentist and Bayesian analyses?
* "P" for both frequentist and Bayesian analyses?
* "p" for frequentist analyses and "P" for Bayesian analyses?
* or "P" for frequentist analyses and "p" for Bayesian analyses?