D r o p o u t R a t e g , r , t = 1 − ( E D P R I S U R g , r , t 100 ) 1 E D P R I L E N r − 1 {\displaystyle DropoutRate_{g,r,t}=1-({\frac {EDPRISUR_{g,r,t}}{100}})^{\frac {1}{\mathbf {EDPRILEN} _{r}-1}}}
