One method of assessing biologic fertility is to measure time to pregnancy (TTP). Accidental pregnancies do not generate a valid TTP value and lead to nonrandom missing data if couples experiencing accidental pregnancies are more fertile than the general population. If factors affecting the rate of accidental pregnancies, such as availability of effective contraception and induced abortion, var...

Classical generative phonology draws a distinction between possible words (accidental gaps) and impossible words (systematic gaps) [4]. This model predicts that speakers should categorically judge accidental gaps to be well-formed and systematic gaps to be ill-formed, and thus rate accidental gaps more highly than systematic gaps in a wordlikeness judgment task. Such structure models attribute ...

background: acute drug poisoning remains an important public health problem and represents the second most frequent accidental disease in children. in this study, we identified epidemiological and clinical features of children admitted for acute drug poisoning and related factors associated with suicidal poisoning. methods: we conducted a retrospective study in the department of pediatrics, the...