The study was terminated earlier than planned, limiting its statistical power to detect differences in individual outcomes instead of only composite outcomes. (sciencedaily.com)
Women were classified into the three groups according to their planned place of birth at the onset of labour and the primary composite outcome for the neonate was used [2]. (bmcpregnancychildbirth.biomedcentral.com)
Peterson et al. (2006a, b) also found confronting, self - control and accepting responsibility were positively associated with infertility - specific stress, whilst Terry and Hynes (1998) identified emotional approach as positively linked to their depression / anxiety composite outcome measure. (academic.oup.com)