The prevalence of PPD is considered to be 10-15%, however most studies on PPD have been conducted in WEIRD countries, so a study was conducted to see if non-WEIRD countries showcase a similar rate of PPD. There was found to be a wide range of PPD worldwide, with some countries reporting very few cases(Singapore, Malaysia, Denmark) and some reporting a high prevalence(Brazil, Chile, Taiwan). The range was 0=60% percent prevalence. So, it was concluded that the 10-15% prevalence rate may not be entirely representative of the true world-wide prevalence and needs to be examined further using more cross-culturally appropriate methods.