State-Specific Assisted Reproductive Technology Surveillance, United States: 2021 Data Brief

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TABLE 7. Percentage of low birth weight (<2,500g), preterm (<37 weeks), and small for gestational age infants among singleton infants born with use of assisted reproductive technology in 2021 and all US infants, by female patient’s reporting area of residence at time of treatment in 50 US states, the District of Columbia, and Puerto Rico
Percentage of low birth weight (<2,500g), preterm (<37 weeks), and small for gestational age infants among singleton infants born with use of assisted reproductive technology in 2021 and all US infants, by female patient’s reporting area of residence at time of treatment in 50 US states, the District of Columbia, and Puerto Rico
Patient’s reporting area of residencea Low birth weight
(<2500g)
ART infantsb
%		 Low birth weight
(<2500g)
All infantsc
%		 Preterm birth
(<37 weeks)
ART infantsb
%		 Preterm birth
(<37 weeks)
All infantsc
%		 SGA
ART infantsb
%		 SGA
All infantsc
%
Alabama 10.5 8.4 17.6 10.9 6.8 10.3
Alaska 9.1 5.5 14.1 8.6 d 5.8
Arizona 10.9 6.4 14.8 8.4 7.8 8.7
Arkansas 7.0 7.9 12.4 10.2 8.1 9.7
California 8.4 5.9 11.7 7.6 9.5 8.8
Colorado 10.4 7.9 12.5 8.1 13.2 12.8
Connecticut 8.8 6.3 12.5 7.7 9.0 8.6
Delaware 10.7 7.6 15.7 9.2 8.0 9.6
District of Columbia 9.5 8.1 10.9 8.8 9.1 11.8
Florida 9.3 7.5 14.9 9.2 7.9 9.7
Georgia 10.9 8.8 16.3 9.9 8.7 11.3
Hawaii 14.8 7.4 15.5 8.8 8.9 10.7
Idaho 10.7 5.2 17.7 7.4 6.6 7.9
Illinois 8.4 6.9 13.3 9.0 7.6 8.8
Indiana 10.6 6.8 16.2 9.1 6.7 8.4
Iowa 7.2 5.2 14.4 8.1 4.4 6.8
Kansas 8.9 5.9 13.0 8.2 7.2 7.5
Kentucky 7.2 7.3 16.6 10.0 8.3 8.3
Louisiana 7.8 9.3 15.2 11.4 7.2 11.2
Maine 10.0 6.1 10.2 7.8 7.6 7.7
Maryland 9.5 7.3 13.6 9.0 8.1 9.3
Massachusetts 7.5 5.9 10.2 7.2 8.2 8.7
Michigan 11.7 7.4 15.7 8.6 7.8 9.6
Minnesota 7.6 5.7 13.2 7.8 7.1 7.3
Mississippi 9.5 10.2 19.1 12.7 5.2 12.0
Missouri 10.5 7.2 16.1 9.4 5.5 8.7
Montana 3.9 6.2 14.3 8.3 4.6 8.8
Nebraska 8.3 5.8 17.2 8.7 4.3 7.1
Nevada 11.8 8.0 16.2 9.4 9.5 10.7
New Hampshire 5.4 5.3 9.4 6.8 5.7 8.0
New Jersey 7.5 6.2 10.7 7.6 8.3 9.0
New Mexico 9.0 8.1 13.5 8.8 14.6 12.5
New York 8.0 6.7 11.4 7.9 9.1 10.0
North Carolina 8.6 7.8 13.2 9.0 8.0 10.1
North Dakota 7.1 5.4 13.3 8.0 8.0 6.6
Ohio 8.4 7.1 13.1 8.9 6.8 9.1
Oklahoma 7.2 7.2 15.1 10.1 6.3 8.7
Oregon 8.3 5.4 11.7 7.1 8.9 7.7
Pennsylvania 8.1 6.7 13.5 8.1 7.0 9.3
Puerto Rico 19.2 9.2 17.3 10.6 13.5 13.1
Rhode Island 7.7 6.5 8.8 8.0 5.5 8.7
South Carolina 8.8 8.3 14.3 10.1 6.1 9.8
South Dakota 7.5 5.5 14.6 8.5 d 7.5
Tennessee 7.4 7.7 16.3 9.6 6.8 9.8
Texas 9.8 7.1 15.2 9.7 7.5 8.9
Utah 12.0 5.8 16.4 8.0 9.6 8.1
Vermont 7.4 5.6 8.0 6.5 9.8 8.2
Virginia 8.5 6.8 12.4 8.2 8.1 9.2
Washington 8.8 5.6 13.0 7.4 7.5 7.7
West Virginia 8.7 7.9 14.9 10.8 4.0 9.2
Wisconsin 9.3 6.2 15.6 8.3 5.4 7.8
Wyoming 11.8 7.9 19.5 9.2 d 12.0
Total 8.8 6.9 13.2 8.8 8.1 9.2
ART = assisted reproductive technology; SGA = small for gestational age (22-44 weeks), defined as <10th percentile of birthweight for gestational age week.
layout
a In cases of missing patient’s residence data (1.8%), it was assigned as the location where the ART procedure was performed.
b Includes infants conceived from ART procedures performed in 2020 and born in 2021 and infants conceived from ART procedures performed in 2021 and born in 2021. ART births exclude births to non-US residents and include only infants with gestational age data available.
c US births exclude births to non-US residents. Source: National Center for Health Statistics, Vital statistics data available. Natality public use file and CD-ROM. Hyattsville, MD, National Center for Health Statistics.
d To protect confidentiality, cells with values of 1–4 for ART infants and cells with values of 0–9 for all infants are suppressed. Also suppressed are data that can be used to derive suppressed cell values. These values are included in the totals.
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