Several studies have shown that at the individual level there exists a negative relationship between age at first birth and completed fertility. Using twin data in order to control for unobserved heterogeneity as possible source of bias, Kohler et al. (2001) showed the significant presence of...

The Republic of Moldova demonstrates the highest reliance on natural contraceptive methods in Europe, and natural methods account for an increasing proportion of contraceptive mix since 1997. This study investigates method use correlates in Moldova in order to explain this high reliance on...

Background: The twelve-item General Health Questionnaire (GHQ-12) was developed to screen for non-specific psychiatric morbidity. It has been widely validated and found to be reliable. These validation studies have assumed that the GHQ-12 is one-dimensional and free of response bias, but recent...