Fig. 4From: RETRACTED ARTICLE: Improving usability and pregnancy rates of a fertility monitor by an additional mobile application: results of a retrospective efficacy study of Daysy and DaysyView appGeneral Cycle statistics correlated to users age. a, Cycle length on average (****t-test p = 0.0001; * t-test p = 0.0228). b, Distribution of irregular cycles. c, Length of menstruationBack to article page