Table 1.
Number of Live Births and Hypertension-Related MMRs (per 100 000 Live Births) by Maternal Age, Period, and Maternal Birth Cohorts: United States 1979 to 2018
| Period of death | Maternal age, y | Central birth cohort | ||||||
|---|---|---|---|---|---|---|---|---|
| 15–19 | 20–24 | 25–29 | 30–34 | 35–39 | 40–44 | 45–49 | ||
| 1087 (92.0) | 1937 | |||||||
| 20 862 (9.6) | 1167 (85.7) | 1942 | ||||||
| 1 27 183 (7.1) | 28 391 (7.0) | 1 640 (61.0) | 1947 | |||||
| 502 051 (4.6) | 214 660 (3.7) | 48 665 (10.3) | 2728 (36.6) | 1952 | ||||
| 1 017 915 (2.4) | 697 298 (1.7) | 317 959 (3.5) | 67 314 (7.4) | 4355 (23.0) | 1957 | |||
| 1 125 164 (1.7) | 1 202 858 (0.9) | 887 1 12 (2.4) | 384 128 (3.1) | 90 124 (4.4) | 6132 (16.3) | 1962 | ||
| 506 591 (3.9) | 1 142 457 (0.6) | 1 278 669 (1.2) | 905 511 (1.4) | 452 575 (3.8) | 104 815 (10.5) | 7182 (69.6) | 1967 | |
1980 
|
467 761 (1.5) | 1 094 950 (2.5) | 1 064 615 (1.3) | 930 499 (2.5) | 484 004 (3.7) | 107 266 (9.3) | 8228 (121.5) | 1972 |
| 1985
|
522 204 (2.5) | 966 306 (1.9) | 1 089 179 (2.3) | 952 787 (1.8) | 465 948 (3.0) | 1 12 232 (9.8) | 1977 | |
| 1990
|
500 1 12 (0.6) | 1 018 922 (1.3) | 1 133 747 (2.1) | 964 440 (2.5) | 529 565 (4.2) | 1982 | ||
| 1995
|
469 423 (1.1) | 1 041 847 (1.0) | 1 136 047 (1.4) | 1 097 846 (1.5) | 1987 | |||
| 2000
|
415 226 (1.2) | 953 064 (1.3) | 1 155 359 (1.8) | 1992 | ||||
| 2005
|
368 165 (1.4) | 852 149 (0.9) | 1997 | |||||
| 2010
|
230 167 (0.9) | 2002 | ||||||
| 2015
|
||||||||
Table entries denote the total number of live births (MMRs: expressed per 100 000 live births). Period of death refers to the year when women died, and central maternal birth cohort refers to the mid-year (in a 5-y interval) when women were born. Among women who died in 2015 (period) aged 15 to 19 y, the MMR was 0.9 per 100 000 live births. These women would have been born between 1995 and 2000 (central maternal birth cohort 2002). MMR indicates maternal mortality rate.