Maintained/created by: National Center for Health Statistics
Geographic unit of data: U.S. National
Data set containing information about matched sets of twins, triplets, and quadruplets on cd-rom.
The Matched Multiple Birth Data Set is maintained by the National Center for Health Statistics. The Matched Multiple Birth Data Set allows for unique analysis of birth set data because it links birth sets together generating data about gender among the set, birth weight among the set, and outcomes among the set. Included on the file are 325,516 sets of twins; 12,157 sets of triplets; and 760 sets of quadruplets
Data is presented in Cd-rom. The data was collected over six years and 98% of the records are of matched sets. All of the data is from the United States.
For more information on this cd-rom, contact: Reproductive Statistics Branch National Center for Health Statistics 3311 Toledo Road, Room 7318 Hyattsville, Maryland 20782 Telephone: (301) 458-4362 or (301) 458-4111