National Vital Statistics Reports, Vol. 68, No. 13, November 27, 2019 37
Table 20. Births, by gestational age (weeks): United States, 2010–2018, and by race and Hispanic origin of mother,
United States, 2016–2018
Race and Hispanic
origin of
mother and year All births
Preterm
1
Term
1
Post
term
1
Not
stated
Total
under 37
Total
under 34
Early Late
Total
37–41
Early
37–38
Full
39–40
Late
41
42 and
overUnder 28 28–31 32–33
34–36
All races and origins²
Number
Percent
Number
2018. . . . . . . . . . . . . . . . 3,791,712 10.02 2.75 0.66 0.91 1.18 7.28 89.68 26.53 57.24 5.90 0.30 2,507
2017. . . . . . . . . . . . . . . . 3,855,500 9.93 2.76 0.67 0.92 1.17 7.17 89.74 26.00 57.49 6.25 0.33 2,759
2016. . . . . . . . . . . . . . . . 3,945,875 9.85 2.76 0.68 0.92 1.17 7.09 89.80 25.47 57.94 6.38 0.35 3,454
2015. . . . . . . . . . . . . . . . 3,978,497 9.63 2.76 0.68 0.91 1.17 6.87 89.98 24.99 58.47 6.51 0.40 2,926
2014. . . . . . . . . . . . . . . . 3,988,076 9.57 2.75 0.69 0.91 1.15 6.82 90.43 24.76 58.72 6.53 0.42 3,246
2013. . . . . . . . . . . . . . . . 3,932,181 9.62 2.79 0.70 0.92 1.17 6.83 90.38 24.81 58.85 6.31 0.41 7,467
2012. . . . . . . . . . . . . . . . 3,952,841 9.76 2.80 0.71 0.92 1.17 6.96 90.24 25.47 58.30 6.06 0.40 8,380
2011. . . . . . . . . . . . . . . . 3,953,590 9.81 2.81 0.70 0.93 1.18 6.99 90.19 26.09 57.51 6.16 0.43 9,290
2010. . . . . . . . . . . . . . . . 3,999,386 9.98 2.84 0.71 0.94 1.18 7.15 90.01 27.29 56.08 6.19 0.46 10,538
Non-Hispanic,
single race
3
White:
2018 . . . . . . . . . . . . . . 1,956,413 9.09 2.26 0.44 0.76 1.07 6.83 90.53 24.68 59.16 6.70 0.37 924
2017 . . . . . . . . . . . . . . 1,992,461 9.05 2.30 0.46 0.77 1.06 6.76 90.54 24.16 59.27 7.11 0.40 1,051
2016 . . . . . . . . . . . . . . 2,056,332 9.04 2.33 0.48 0.78 1.07 6.72 90.53 23.64 59.61 7.28 0.43 1,409
Black:
2018 . . . . . . . . . . . . . . 552,029 14.13 4.90 1.51 1.60 1.79 9.23 85.62 29.64 51.34 4.64 0.25 384
2017 . . . . . . . . . . . . . . 560,715 13.93 4.87 1.53 1.62 1.72 9.06 85.79 28.93 51.90 4.96 0.28 445
2016 . . . . . . . . . . . . . . 558,622 13.77 4.93 1.56 1.61 1.75 8.84 85.94 28.48 52.42 5.04 0.30 506
Hispanic
4
2018. . . . . . . . . . . . . . . . 886,210 9.73 2.56 0.62 0.84 1.09 7.17 90.07 28.05 56.83 5.19 0.20 382
2017. . . . . . . . . . . . . . . . 898,764 9.62 2.56 0.62 0.85 1.09 7.05 90.16 27.58 57.15 5.43 0.23 455
2016. . . . . . . . . . . . . . . . 918,447 9.45 2.98 0.62 0.84 1.08 6.92 90.30 27.02 57.85 5.43 0.25 676
All races and origins² Number
2018. . . . . . . . . . . . . . . . 3,791,712 379,777 104,031 24,945 34,386 44,700 275,746 3,398,110 1,005,405 2,169,016 223,689 11,318 2,507
2017. . . . . . . . . . . . . . . . 3,855,500 382,726 106,417 25,913 35,476 45,028 276,309 3,457,455 1,001,601 2,214,983 240,871 12,560 2,759
2016. . . . . . . . . . . . . . . . 3,945,875 388,218 108,836 26,618 36,239 45,979 279,382 3,540,290 1,004,224 2,284,399 251,667 13,913 3,454
2015. . . . . . . . . . . . . . . . 3,978,497 382,786 109,660 26,996 36,149 46,515 273,126 3,577,072 993,599 2,324,474 258,999 15,713 2,926
2014. . . . . . . . . . . . . . . . 3,988,076 381,321 109,474 27,320 36,245 45,909 271,847 3,586,933 986,745 2,339,796 260,392 19,822 3,246
2013. . . . . . . . . . . . . . . . 3,932,181 377,655 109,435 27,550 36,096 45,789 268,220 3,283,457 973,569 2,309,888 247,476 16,126 7,467
2012. . . . . . . . . . . . . . . . 3,952,841 385,082 110,444 28,004 36,366 46,074 274,638 3,304,365 1,004,750 2,299,615 239,148 15,866 8,380
2011. . . . . . . . . . . . . . . . 3,953,590 386,855 111,002 27,737 36,758 46,507 275,853 3,297,649 1,029,157 2,268,492 242,999 16,797 9,290
2010. . . . . . . . . . . . . . . . 3,999,386 398,402 113,131 28,437 37,435 47,259 285,271 3,325,476 1,088,564 2,236,912 246,768 18,413 10,538
Non-Hispanic,
single race
3
White:
2018 . . . . . . . . . . . . . . 1,956,413 177,842 44,287 8,665 14,764 20,858 133,555 1,770,366 482,550 1,156,775 131,041 7,281 924
2017 . . . . . . . . . . . . . . 1,992,461 180,322 45,761 9,200 15,429 21,132 134,561 1,803,063 481,048 1,180,394 141,621 8,025 1,051
2016 . . . . . . . . . . . . . . 2,056,332 185,854 47,823 9,766 16,101 21,956 138,031 1,860,243 485,846 1,224,872 149,525 8,826 1,409
Black:
2018 . . . . . . . . . . . . . . 552,029 77,939 27,008 8,348 8,804 9,856 50,931 472,316 163,530 283,202 25,584 1,390 384
2017 . . . . . . . . . . . . . . 560,715 78,024 27,274 8,548 9,070 9,656 50,750 480,661 162,072 290,803 27,786 1,585 445
2016 . . . . . . . . . . . . . . 558,622 76,834 27,501 8,729 8,987 9,785 49,333 479,630 158,937 292,539 28,154 1,652 506
Hispanic
4
2018. . . . . . . . . . . . . . . . 886,210 86,186 22,637 5,490 7,467 9,680 63,549 797,905 248,463 503,429 46,013 1,737 382
2017. . . . . . . . . . . . . . . . 898,764 86,393 23,025 5,605 7,635 9,785 63,368 809,882 247,788 513,342 48,752 2,034 455
2016. . . . . . . . . . . . . . . . 918,447 86,691 23,195 5,649 7,665 9,881 63,496 828,783 247,999 530,951 49,833 2,297 676
1
Expressed in completed weeks based on the obstetric estimate of gestation; see Technical Notes in this report.
2
Includes births to race and origin groups not shown separately, such as Hispanic single-race white, Hispanic single-race black, and non-Hispanic multiple-race women, and births with origin
not stated.
³
Race and Hispanic origin are reported separately on birth certificates; persons of Hispanic origin may be of any race. In this table, non-Hispanic women are classified by race. Race categories
are consistent with the 1997 Office of Management and Budget standards; see Technical Notes. Single race is defined as only one race reported on the birth certificate.
4
Includes all persons of Hispanic origin of any race; see Technical Notes.
SOURCE: NCHS, National Vital Statistics System, Natality.