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Birth rates by maternal age cohort from 2007 to 2015 in the United States​
Birth rates by maternal age cohort from 2007 to 2015 in the United States​
NOTE: For each age group, differences are significant from 2007 to 2014, 2007 to 2015, and 2014 to 2015 (p <0.05).
Reproduced from: Martin JA, Hamilton BE, Osterman MJ. Births in the United States, 2015. NCHS Data Brief 2016; 258:1.
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