Fig. 1

CONSORT flow diagram for surveys and thalassemia testing (the latter in gray). Thai, Myanmar, and Cambodian subjects of reproductive age (18–49 years old) presenting to Laem Chabang Hospital (LCH) were screened for eligibility. Those individuals who did not speak Thai, Burmese, or Khmer, or pregnant or with a pregnant partner by self-report, were excluded. Subjects were considered lost if they were approached by the study team and initially agreed to participate in the study, but subsequently left the hospital before completing the study without alerting the study team. Three subjects were lost prior to consent, 3 following consent and prior to starting the surveys, and 3 prior to completing the full demographic survey. Out of 200 Thai and 300 migrant subjects surveyed, 492 subjects completed the demographic survey. The KAP survey was completed by 155 Thai and 11 migrant subjects who were aware of thalassemia. Out of the 300 migrant subjects offered thalassemia testing, 286 were eligible for and 277 (96.9%) consented to thalassemia testing