Additional file 1 of Trends in infants born at low birthweight and disparities by maternal race and education from 2003 to 2018 in the United States

Additional file 1. Data and Trends for LBW, VLBW, Advanced Maternal Age, and Multiple Births by Maternal Race, Education, and Their Combination, United States, 2003–2018. An additional file is provided, entitled ‘Additional File 1.xlsx’, containing the datasets supporting the conclusions of the article. The first sheet entitled ‘LBW Data’ includes the number of infants born at low birthweight, the total number of births, and the percentage of infants born at low birthweight overall, by race/ethnicity, by education, and by race and education subgroups for the years under study. The second sheet entitled ‘VLBW Data’ includes the same information for infants born at very low birthweight. The third sheet entitled ‘VLBW Trends’ includes the trend period years and annual percent changes for all groups and between group variances for infants born at very low birthweight. The fourth sheet entitled ‘AMA Data’ includes the number of infants born at low birthweight, the total number of births, and the percentage of infants born at low birthweight overall, by race/ethnicity, by education, and by race and education subgroups for mothers greater than or equal to 35 years of age and for mothers less than 35 years of age. The fifth sheet entitled ‘AMA Trends’ includes the trend period years and annual percent changes for all groups and between group variances for infants born at low birthweight for mothers ages 35 and over and for mothers less than age 35. The sixth sheet entitled ‘Multiples Data’ includes the number of infants born at low birthweight, the total number of births, and the percentage of infants born at low birthweight overall, by race/ethnicity, by education, and by race and education subgroups for multiple birth infants. Finally, the seventh sheet entitled ‘Multiples Trends’ includes the trend period years and annual percent changes for all groups and between group variances for multiple birth infants born at low birthweight.