title: Study of hemoglobinopathies in Oman through a national register.
abstract: OBJECTIVE
  A national register of symptomatic hemoglobinopathies has been developed in Oman to facilitate the development of the National Program for the control of genetic blood disorders.
  
  
  METHODS
  The information was initially collected retrospectively through hospital records and was refined prospectively with data collected through a survey of pediatricians. The percentages of heterozygotes in different population groups and geographical locations, birth prevalence, age distribution of cases and factors determining frequencies of Hemoglobinopathies in different regions of the country were studied from the register.
  
  
  RESULTS
  The register has identified 1757 cases of homozygous Sickle Cell Anemia and 243 cases of beta-thalassemia major in a population of 1.5 million in 1995. Register based national figures of heterozygote carriers approximate 10% for Sickle Cell Anemia and 4% for beta-thalassemia major.
  
  
  CONCLUSIONS
  Defining regional and tribal variations can assist efficient targeting of health resources. This approach provides a simple model for other countries or regions to follow providing there is a health care system that facilitates registration.
authors.affiliation: Genetic Blood Disorders Unit, DGHA, Ministry of Health, PO Box 880, Muscat 113, Sultanate of Oman. drarajab@omantel.net.om
authors.forename: A G
authors.initials: AG
authors.lastname: Rajab
authors.forename: M A
authors.initials: MA
authors.lastname: Patton
authors.forename: B
authors.initials: B
authors.lastname: Modell
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D006580:Genetic Carrier Screening; D006453:Hemoglobinopathies / Q000453:epidemiology* / Q000235:genetics*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D009850:Oman / Q000453:epidemiology; D011159:Population Surveillance; D015995:Prevalence; D011446:Prospective Studies; D012042:Registries; D012111:Residence Characteristics; D012189:Retrospective Studies; D012307:Risk Factors; D016019:Survival Analysis