Compute the true PR in a cohort as a function of age and exposure
truePR.RdThe true PR is $$p_\bday(a|h) = 1 - e^{-m_\bday(a|h)}$$
Value
a numeric vector of length(a)
truePR.RdThe true PR is $$p_\bday(a|h) = 1 - e^{-m_\bday(a|h)}$$
a numeric vector of length(a)