The search did not yield specific studies on PTS symptoms in mothers of
preterm infants in African or other low-income countries. The
majority of the samples in most studies were Caucasian mothers
rather than other races, except for Holditch-Davis et al. (2009) that
specifically recruited African-American mothers. The studies were
mainly located in regional or university hospitals (e.g., level 3
NICUs) and a few studies recruited participants from ‘World
Wide Web sites’ aimed at parents of preterm and other high-risk
infants, undergraduate psychology courses, conferences or meetings
targeting parents of premature and other high-risk infants,
and a health center.