Chapter 6 DOCUMENTATION TABLE 3 Page 1 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT | |_______________________________________________________ | | < 28 | 28-31 | 32-35 | 36 | TOTAL | WEEKS | WEEKS | WEEKS | WEEKS ______________________|__________|__________|__________|_________|____________ ALL RACES 1/ TOTAL LIVE BIRTHS........ 4,111,059 29,371 49,700 208,904 152,195 INFANT DEATHS...... 35,496 13,032 3,003 3,420 1,350 INF.MORT.RATE...... 8.6 443.7 60.4 16.4 8.9 LESS THAN 2,500 GRAMS LIVE BIRTHS........ 292,323 27,039 34,787 87,982 30,484 INFANT DEATHS...... 21,054 12,444 2,815 2,448 584 INF.MORT.RATE...... 72.0 460.2 80.9 27.8 19.2 LESS THAN 500 GRAMS LIVE BIRTHS...... 5,524 5,066 219 15 1 INFANT DEATHS.... 4,898 4,552 166 11 0 INF. MORT. RATE.. 886.7 898.5 758.0 733.3 - 500-749 GRAMS LIVE BIRTHS...... 9,709 8,149 1,085 140 13 INFANT DEATHS.... 5,981 5,264 482 53 5 INF. MORT. RATE.. 616.0 646.0 444.2 378.6 384.6 750-999 GRAMS LIVE BIRTHS...... 10,940 6,902 3,077 455 45 INFANT DEATHS.... 2,579 1,869 529 80 6 INF. MORT. RATE.. 235.7 270.8 171.9 175.8 133.3 1,000-1,249 GRAMS LIVE BIRTHS...... 12,407 3,198 6,236 1,846 169 INFANT DEATHS.... 1,347 470 545 210 26 INF. MORT. RATE.. 108.6 147.0 87.4 113.8 153.8 1,250-1,499 GRAMS LIVE BIRTHS...... 14,495 1,180 7,359 4,043 434 INFANT DEATHS.... 1,037 138 437 280 51 INF. MORT. RATE.. 71.5 116.9 59.4 69.3 117.5 1,500-1,999 GRAMS LIVE BIRTHS...... 55,942 1,475 11,427 26,677 4,566 INFANT DEATHS.... 2,191 110 488 841 177 INF. MORT. RATE.. 39.2 74.6 42.7 31.5 38.8 2,000-2,499 GRAMS LIVE BIRTHS...... 183,306 1,069 5,384 54,806 25,256 INFANT DEATHS.... 3,021 41 168 973 319 INF. MORT. RATE.. 16.5 38.4 31.2 17.8 12.6 2,500-2,999 GRAMS LIVE BIRTHS........ 669,377 1,571 5,599 54,317 54,571 INFANT DEATHS...... 4,312 25 85 544 400 INF.MORT.RATE...... 6.4 15.9 15.2 10.0 7.3 DOCUMENTATION TABLE 3 Page 2 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT | |_______________________________________________________ | | < 28 | 28-31 | 32-35 | 36 | TOTAL | WEEKS | WEEKS | WEEKS | WEEKS ______________________|__________|__________|__________|____________|_________ ALL RACES 1/ 3,000-3,499 GRAMS LIVE BIRTHS........ 1,511,485 - 6,080 42,116 45,118 INFANT DEATHS...... 5,058 - 52 253 263 INF.MORT.RATE...... 3.3 - 8.6 6.0 5.8 3,500-3,999 GRAMS LIVE BIRTHS....... 1,197,188 - 3,078 19,323 17,463 INFANT DEATHS...... 2,883 - 15 98 70 INF.MORT.RATE...... 2.4 - 4.9 5.1 4.0 4,000-4,499 GRAMS LIVE BIRTHS........ 365,392 - - 4,216 3,796 INFANT DEATHS...... 765 - - 25 15 INF.MORT.RATE...... 2.1 - - 5.9 4.0 4,500-4,999 GRAMS LIVE BIRTHS........ 62,926 - - 638 605 INFANT DEATHS...... 183 - - 5 4 INF.MORT.RATE...... 2.9 - - 7.8 6.6 5,000+ GRAMS LIVE BIRTHS........ 7,591 - - 120 79 INFANT DEATHS...... 60 - - 4 1 INF.MORT.RATE...... 7.9 - - 33.3 12.7 NOT STATED LIVE BIRTHS........ 4,777 761 156 192 79 INFANT DEATHS...... 1,181 563 36 43 13 INF.MORT.RATE...... 247.2 739.8 230.8 224.0 164.6 SEE FOOTNOTES AT END OF TABLE. DOCUMENTATION TABLE 3 Page 3 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT | |_______________________________________________________ | | < 28 | 28-31 | 32-35 | 36 | TOTAL | WEEKS | WEEKS | WEEKS | WEEKS ______________________|__________|__________|__________|_____________|________ WHITE TOTAL LIVE BIRTHS........ 3,241,355 15,804 29,365 138,533 109,514 INFANT DEATHS...... 22,875 7,351 1,895 2,286 939 INF.MORT.RATE...... 7.1 465.1 64.5 16.5 8.6 LESS THAN 2,500 GRAMS LIVE BIRTHS........ 187,858 14,611 20,902 58,636 20,532 INFANT DEATHS...... 12,644 6,979 1,776 1,638 416 INF.MORT.RATE...... 67.3 477.7 85.0 27.9 20.3 LESS THAN 500 GRAMS LIVE BIRTHS...... 2,917 2,660 120 11 - INFANT DEATHS.... 2,632 2,437 89 10 - INF. MORT. RATE.. 902.3 916.2 741.7 909.1 - 500-749 GRAMS LIVE BIRTHS...... 5,404 4,502 628 87 7 INFANT DEATHS.... 3,389 2,968 285 35 2 INF. MORT. RATE.. 627.1 659.3 453.8 402.3 285.7 750-999 GRAMS LIVE BIRTHS...... 6,397 3,908 1,878 286 32 INFANT DEATHS.... 1,592 1,124 347 55 5 INF. MORT. RATE.. 248.9 287.6 184.8 192.3 156.3 1,000-1,249 GRAMS LIVE BIRTHS...... 7,532 1,830 3,861 1,156 105 INFANT DEATHS.... 867 288 349 134 21 INF. MORT. RATE.. 115.1 157.4 90.4 115.9 200.0 1,250-1,499 GRAMS LIVE BIRTHS...... 8,950 569 4,593 2,587 284 INFANT DEATHS.... 681 80 281 196 36 INF. MORT. RATE.. 76.1 140.6 61.2 75.8 126.8 1,500-1,999 GRAMS LIVE BIRTHS...... 35,766 648 7,108 17,489 3,046 INFANT DEATHS.... 1,478 63 318 577 132 INF. MORT. RATE.. 41.3 97.2 44.7 33.0 43.3 2,000-2,499 GRAMS LIVE BIRTHS...... 120,892 494 2,714 37,020 17,058 INFANT DEATHS.... 2,005 19 107 631 220 INF. MORT. RATE.. 16.6 38.5 39.4 17.0 12.9 2,500-2,999 GRAMS LIVE BIRTHS........ 469,309 731 2,771 35,520 38,906 INFANT DEATHS...... 2,883 12 50 350 274 INF.MORT.RATE...... 6.1 16.4 18.0 9.9 7.0 DOCUMENTATION TABLE 3 Page 4 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT |_______________________________________________________ | | < 28 | 28-31 | 32-35 | 36 | TOTAL | WEEKS | WEEKS | WEEKS | WEEKS ______________________|__________|__________|__________|____________|_________ WHITE 3,000-3,499 GRAMS LIVE BIRTHS........ 1,178,436 - 3,545 26,979 33,057 INFANT DEATHS...... 3,597 - 36 176 180 INF.MORT.RATE...... 3.1 - 10.2 6.5 5.4 3,500-3,999 GRAMS LIVE BIRTHS........ 1,015,518 - 2,044 13,503 13,369 INFANT DEATHS...... 2,228 - 11 67 46 INF.MORT.RATE...... 2.2 - 5.4 5.0 3.4 4,000-4,499 GRAMS LIVE BIRTHS........ 323,771 - - 3,174 3,027 INFANT DEATHS...... 631 - - 18 11 INF.MORT.RATE...... 1.9 - - 5.7 3.6 4,500-4,999 GRAMS LIVE BIRTHS........ 56,427 - - 497 502 INFANT DEATHS...... 136 - - 3 4 INF.MORT.RATE...... 2.4 - - 6.0 8.0 5,000+ GRAMS LIVE BIRTHS........ 6,595 - - 88 62 INFANT DEATHS...... 35 - - 2 0 INF.MORT.RATE...... 5.3 - - 22.7 - NOT STATED LIVE BIRTHS........ 3,441 462 103 136 59 INFANT DEATHS...... 721 360 22 32 8 INF.MORT.RATE...... 209.5 779.2 213.6 235.3 135.6 SEE FOOTNOTES AT END OF TABLE. DOCUMENTATION TABLE 3 Page 5 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT |_______________________________________________________ | | < 28 | 28-31 | 32-35 | 36 | TOTAL | WEEKS | WEEKS | WEEKS | WEEKS ______________________|__________|__________|__________|_____________|________ BLACK TOTAL LIVE BIRTHS........ 682,669 12,747 18,469 60,721 35,696 INFANT DEATHS........ 11,321 5,365 1,006 1,002 368 INF.MORT.RATE........ 16.6 420.9 54.5 16.5 10.3 LESS THAN 2,500 GRAMS LIVE BIRTHS.......... 92,393 11,698 12,730 26,025 8,671 INFANT DEATHS........ 7,775 5,164 946 719 151 INF.MORT.RATE........ 84.2 441.4 74.3 27.6 17.4 LESS THAN 500 GRAMS LIVE BIRTHS........ 2,471 2,290 94 4 - INFANT DEATHS...... 2,154 2,018 72 1 - INF. MORT. RATE.... 871.7 881.2 766.0 250.0 - 500-749 GRAMS LIVE BIRTHS........ 4,020 3,431 426 45 3 INFANT DEATHS...... 2,423 2,158 181 16 2 INF. MORT. RATE.... 602.7 629.0 424.9 355.6 666.7 750-999 GRAMS LIVE BIRTHS........ 4,194 2,792 1,097 153 12 INFANT DEATHS...... 917 696 166 22 1 INF. MORT. RATE.... 218.6 249.3 151.3 143.8 83.3 1,000-1,249 GRAMS LIVE BIRTHS........ 4,497 1,279 2,197 629 58 INFANT DEATHS...... 442 170 180 69 4 INF. MORT. RATE.... 98.3 132.9 81.9 109.7 69.0 1,250-1,499 GRAMS LIVE BIRTHS........ 5,015 573 2,507 1,298 139 INFANT DEATHS...... 320 56 139 75 13 INF. MORT. RATE.... 63.8 97.7 55.4 57.8 93.5 1,500-1,999 GRAMS LIVE BIRTHS........ 18,091 787 3,944 8,229 1,364 INFANT DEATHS...... 619 45 151 230 43 INF. MORT. RATE.... 34.2 57.2 38.3 27.9 31.5 2,000-2,499 GRAMS LIVE BIRTHS........ 54,105 546 2,465 15,667 7,095 INFANT DEATHS...... 900 21 57 306 88 INF. MORT. RATE.... 16.6 38.5 23.1 19.5 12.4 2,500-2,999 GRAMS LIVE BIRTHS.......... 162,768 772 2,580 16,207 13,137 INFANT DEATHS........ 1,237 13 34 176 111 INF.MORT.RATE........ 7.6 16.8 13.2 10.9 8.4 DOCUMENTATION TABLE 3 Page 6 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT |_______________________________________________________ | | < 28 | 28-31 | 32-35 | 36 | TOTAL | WEEKS | WEEKS | WEEKS | WEEKS ______________________|__________|__________|__________|___________|__________ BLACK 3,000-3,499 GRAMS LIVE BIRTHS.......... 256,480 - 2,223 12,694 9,911 INFANT DEATHS........ 1,213 - 12 69 76 INF.MORT.RATE........ 4.7 - 5.4 5.4 7.7 3,500-3,999 GRAMS LIVE BIRTHS........ 134,667 - 890 4,775 3,263 INFANT DEATHS...... 521 - 4 23 21 INF.MORT.RATE...... 3.9 - 4.5 4.8 6.4 4,000-4,499 GRAMS LIVE BIRTHS........ 29,926 - - 837 607 INFANT DEATHS...... 104 - - 5 4 INF.MORT.RATE...... 3.5 - - 6.0 6.6 4,500-4,999 GRAMS LIVE BIRTHS........ 4,602 - - 112 78 INFANT DEATHS...... 38 - - 1 0 INF.MORT.RATE...... 8.3 - - 8.9 - 5,000+ GRAMS LIVE BIRTHS........ 707 - - 24 14 INFANT DEATHS...... 21 - - 2 1 INF.MORT.RATE...... 29.7 - - 83.3 71.4 NOT STATED LIVE BIRTHS........ 1,126 277 46 47 15 INFANT DEATHS...... 412 188 10 7 4 INF.MORT.RATE...... 365.9 678.7 217.4 148.9 266.7 1/ INCLUDES RACES OTHER THAN WHITE AND BLACK DOCUMENTATION TABLE 3 Page 7 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT |_______________________________________________________ | | 37-39 | 40 | 41 | 42 WEEKS| NOT | TOTAL | WEEKS | WEEKS | WEEKS | OR MORE |STATED ______________________|_________|_________|________|________|_________|_______ ALL RACES 1/ TOTAL LIVE BIRTHS........ 4,111,059 1,715,836 919,692 557,972 434,202 43,187 INFANT DEATHS...... 35,496 7,001 2,847 1,808 1,794 1,241 INF.MORT.RATE...... 8.6 4.1 3.1 3.2 4.1 28.7 LESS THAN 2,500 GRAMS LIVE BIRTHS........ 292,323 76,835 14,449 7,057 9,415 4,275 INFANT DEATHS...... 21,054 1,464 312 198 251 538 INF.MORT.RATE...... 72.0 19.1 21.6 28.1 26.7 125.8 LESS THAN 500 GRAMS LIVE BIRTHS...... 5,524 10 6 - 4 203 INFANT DEATHS.... 4,898 5 6 - 3 155 INF. MORT. RATE.. 886.7 500.0 1000.0 - 750.0 763.5 500-749 GRAMS LIVE BIRTHS...... 9,709 18 11 5 8 280 INFANT DEATHS.... 5,981 8 7 2 3 157 INF. MORT. RATE.. 616.0 444.4 636.4 400.0 375.0 560.7 750-999 GRAMS LIVE BIRTHS...... 10,940 148 64 28 23 198 INFANT DEATHS.... 2,579 19 6 1 3 66 INF. MORT. RATE.. 235.7 128.4 93.8 35.7 130.4 333.3 1,000-1,249 GRAMS LIVE BIRTHS...... 12,407 407 139 55 115 242 INFANT DEATHS.... 1,347 44 12 2 6 32 INF. MORT. RATE.. 108.6 108.1 86.3 36.4 52.2 132.2 1,250-1,499 GRAMS LIVE BIRTHS...... 14,495 801 173 95 158 252 INFANT DEATHS.... 1,037 70 10 12 14 25 INF. MORT. RATE.. 71.5 87.4 57.8 126.3 88.6 99.2 1,500-1,999 GRAMS LIVE BIRTHS...... 55,942 7,850 1,291 694 1,152 810 INFANT DEATHS.... 2,191 375 65 41 52 42 INF. MORT. RATE.. 39.2 47.8 50.3 59.1 45.1 51.9 2,000-2,499 GRAMS LIVE BIRTHS...... 183,306 67,601 12,765 6,180 7,955 2,290 INFANT DEATHS.... 3,021 943 206 140 170 61 INF. MORT. RATE.. 16.5 13.9 16.1 22.7 21.4 26.6 2,500-2,999 GRAMS LIVE BIRTHS........ 669,377 345,687 101,545 49,823 49,083 7,181 INFANT DEATHS...... 4,312 1,919 617 314 327 81 INF.MORT.RATE...... 6.4 5.6 6.1 6.3 6.7 11.3 DOCUMENTATION TABLE 3 Page 8 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) _____________________________________________________________________________ | GESTATION BIRTH WEIGHT |______________________________________________________ | | 37-39 | 40 | 41 | 42 WEEKS| NOT | TOTAL | WEEKS | WEEKS | WEEKS | OR MORE |STATED ______________________|_________|_________|________|________|_________|______ ALL RACES 1/ 3,000-3,499 GRAMS LIVE BIRTHS........ 1,511,485 714,164 347,080 188,788 153,191 14,948 INFANT DEATHS...... 5,058 2,232 970 595 605 88 INF.MORT.RATE...... 3.3 3.1 2.8 3.2 3.9 5.9 3,500-3,999 GRAMS LIVE BIRTHS........ 1,197,188 450,563 330,570 212,471 152,895 10,825 INFANT DEATHS...... 2,883 1,062 696 475 422 45 INF.MORT.RATE...... 2.4 2.4 2.1 2.2 2.8 4.2 4,000-4,499 GRAMS LIVE BIRTHS........ 365,392 109,087 105,961 82,279 56,593 3,460 INFANT DEATHS...... 765 224 182 165 135 19 INF.MORT.RATE...... 2.1 2.1 1.7 2.0 2.4 5.5 4,500-4,999 GRAMS LIVE BIRTHS........ 62,926 16,433 17,794 15,467 11,323 666 INFANT DEATHS...... 183 51 40 43 26 14 INF.MORT.RATE...... 2.9 3.1 2.2 2.8 2.3 21.0 5,000+ GRAMS LIVE BIRTHS........ 7,591 2,176 1,877 1,786 1,434 119 INFANT DEATHS...... 60 15 13 3 9 15 INF.MORT.RATE...... 7.9 6.9 6.9 1.7 6.3 126.1 NOT STATED LIVE BIRTHS........ 4,777 891 416 301 268 1,713 INFANT DEATHS...... 1,181 34 17 15 19 441 INF.MORT.RATE...... 247.2 38.2 40.9 49.8 70.9 257.4 SEE FOOTNOTES AT END OF TABLE. DOCUMENTATION TABLE 3 Page 9 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT |_______________________________________________________ | | 37-39 | 40 | 41 | 42 WEEKS| NOT | TOTAL | WEEKS | WEEKS | WEEKS | OR MORE |STATED ______________________|_________|_________|________|________|_________|_______ WHITE TOTAL LIVE BIRTHS........ 3,241,355 1,342,876 755,258 467,152 351,012 31,841 INFANT DEATHS...... 22,875 4,940 2,087 1,355 1,292 730 INF.MORT.RATE...... 7.1 3.7 2.8 2.9 3.7 22.9 LESS THAN 2,500 GRAMS LIVE BIRTHS........ 187,858 50,691 9,388 4,620 5,963 2,515 INFANT DEATHS...... 12,644 1,005 200 148 162 320 INF.MORT.RATE...... 67.3 19.8 21.3 32.0 27.2 127.2 LESS THAN 500 GRAMS LIVE BIRTHS...... 2,917 6 5 - 3 112 INFANT DEATHS.... 2,632 2 5 - 2 87 INF. MORT. RATE.. 902.3 333.3 1000.0 - 666.7 776.8 500-749 GRAMS LIVE BIRTHS...... 5,404 10 3 4 2 161 INFANT DEATHS.... 3,389 3 3 1 1 91 INF. MORT. RATE.. 627.1 300.0 1000.0 250.0 500.0 565.2 750-999 GRAMS LIVE BIRTHS...... 6,397 101 45 20 14 113 INFANT DEATHS.... 1,592 13 6 1 1 40 INF. MORT. RATE.. 248.9 128.7 133.3 50.0 71.4 354.0 1,000-1,249 GRAMS LIVE BIRTHS...... 7,532 245 83 34 72 146 INFANT DEATHS.... 867 37 9 2 3 24 INF. MORT. RATE.. 115.1 151.0 108.4 58.8 41.7 164.4 1,250-1,499 GRAMS LIVE BIRTHS...... 8,950 516 105 62 100 134 INFANT DEATHS.... 681 50 3 10 10 15 INF. MORT. RATE.. 76.1 96.9 28.6 161.3 100.0 111.9 1,500-1,999 GRAMS LIVE BIRTHS...... 35,766 5,036 812 460 710 457 INFANT DEATHS.... 1,478 256 39 31 36 26 INF. MORT. RATE.. 41.3 50.8 48.0 67.4 50.7 56.9 2,000-2,499 GRAMS LIVE BIRTHS...... 120,892 44,777 8,335 4,040 5,062 1,392 INFANT DEATHS.... 2,005 644 135 103 109 37 INF. MORT. RATE.. 16.6 14.4 16.2 25.5 21.5 26.6 2,500-2,999 GRAMS LIVE BIRTHS........ 469,309 244,113 72,546 35,986 34,066 4,670 INFANT DEATHS...... 2,883 1,286 432 206 222 51 INF.MORT.RATE...... 6.1 5.3 6.0 5.7 6.5 10.9 DOCUMENTATION TABLE 3 Page 10 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT |_______________________________________________________ | | 37-39 | 40 | 41 | 42 WEEKS| NOT | TOTAL | WEEKS | WEEKS | WEEKS | OR MORE |STATED ______________________|_________|_________|________|________|_________|_______ WHITE 3,000-3,499 GRAMS LIVE BIRTHS........ 1,178,436 556,882 276,102 151,681 119,165 11,025 INFANT DEATHS...... 3,597 1,588 694 432 431 60 INF.MORT.RATE...... 3.1 2.9 2.5 2.8 3.6 5.4 3,500-3,999 GRAMS LIVE BIRTHS....... 1,015,518 378,967 284,417 184,478 129,925 8,815 INFANT DEATHS..... 2,228 811 554 379 328 32 INF.MORT.RATE..... 2.2 2.1 1.9 2.1 2.5 3.6 4,000-4,499 GRAMS LIVE BIRTHS....... 323,771 95,331 94,747 74,368 50,163 2,961 INFANT DEATHS..... 631 178 154 143 111 16 INF.MORT.RATE..... 1.9 1.9 1.6 1.9 2.2 5.4 4,500-4,999 GRAMS LIVE BIRTHS....... 56,427 14,375 16,063 14,150 10,248 592 INFANT DEATHS..... 136 34 32 34 19 10 INF.MORT.RATE..... 2.4 2.4 2.0 2.4 1.9 16.9 5,000+ GRAMS LIVE BIRTHS....... 6,595 1,808 1,652 1,623 1,266 96 INFANT DEATHS..... 35 10 6 2 6 9 INF.MORT.RATE..... 5.3 5.5 3.6 1.2 4.7 93.8 NOT STATED LIVE BIRTHS....... 3,441 709 343 246 216 1,167 INFANT DEATHS..... 721 28 15 11 13 232 INF.MORT.RATE..... 209.5 39.5 43.7 44.7 60.2 198.8 SEE FOOTNOTES AT END OF TABLE. DOCUMENTATION TABLE 3 Page 11 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) ______________________________________________________________________________ | GESTATION BIRTH WEIGHT |_______________________________________________________ | | 37-39 | 40 | 41 | 42 WEEKS| NOT | TOTAL | WEEKS | WEEKS | WEEKS | OR MORE |STATED ______________________|_________|_________|________|________|_________|_______ BLACK TOTAL LIVE BIRTHS.......... 682,669 286,860 124,633 69,470 66,099 7,974 INFANT DEATHS........ 11,321 1,700 624 385 425 446 INF.MORT.RATE........ 16.6 5.9 5.0 5.5 6.4 55.9 LESS THAN 2,500 GRAMS LIVE BIRTHS.......... 92,393 22,256 4,380 2,124 3,053 1,456 INFANT DEATHS........ 7,775 387 99 45 75 189 INF.MORT.RATE........ 84.2 17.4 22.6 21.2 24.6 129.8 LESS THAN 500 GRAMS LIVE BIRTHS........ 2,471 3 1 - 1 78 INFANT DEATHS...... 2,154 3 1 - 1 58 INF. MORT. RATE.... 871.7 1000.0 1000.0 - 1000.0 743.6 500-749 GRAMS LIVE BIRTHS........ 4,020 8 7 1 6 93 INFANT DEATHS...... 2,423 5 4 1 2 54 INF. MORT. RATE.... 602.7 625.0 571.4 1000.0 333.3 580.6 750-999 GRAMS LIVE BIRTHS........ 4,194 40 16 6 8 70 INFANT DEATHS...... 917 6 0 0 2 24 INF. MORT. RATE.... 218.6 150.0 - - 250.0 342.9 1,000-1,249 GRAMS LIVE BIRTHS........ 4,497 145 47 17 36 89 INFANT DEATHS...... 442 6 2 0 3 8 INF. MORT. RATE.... 98.3 41.4 42.6 - 83.3 89.9 1,250-1,499 GRAMS LIVE BIRTHS........ 5,015 258 62 25 52 101 INFANT DEATHS...... 320 18 5 2 3 9 INF. MORT. RATE.... 63.8 69.8 80.6 80.0 57.7 89.1 1,500-1,999 GRAMS LIVE BIRTHS........ 18,091 2,456 424 209 388 290 INFANT DEATHS...... 619 94 25 8 9 14 INF. MORT. RATE.... 34.2 38.3 59.0 38.3 23.2 48.3 2,000-2,499 GRAMS LIVE BIRTHS........ 54,105 19,346 3,823 1,866 2,562 735 INFANT DEATHS...... 900 255 62 34 55 22 INF. MORT. RATE.... 16.6 13.2 16.2 18.2 21.5 29.9 2,500-2,999 GRAMS LIVE BIRTHS.......... 162,768 80,893 23,255 11,324 12,710 1,890 INFANT DEATHS........ 1,237 533 157 100 89 24 INF.MORT.RATE........ 7.6 6.6 6.8 8.8 7.0 12.7 DOCUMENTATION TABLE 3 Page 12 LIVE BIRTHS, INFANT DEATHS, AND INFANT MORTALITY RATES BY BIRTH WEIGHT, RACE OF MOTHER, AND GESTATIONAL AGE: UNITED STATES, 1991 BIRTH COHORT (RATES ARE PER 1000 LIVE BIRTHS) _____________________________________________________________________________ | GESTATION BIRTH WEIGHT |_______________________________________________________ | | 37-39 | 40 | 41 | 42 WEEKS| NOT | TOTAL | WEEKS | WEEKS | WEEKS | OR MORE |STATED ______________________|_________|_________|________|________|_________|_______ BLACK 3,000-3,499 GRAMS LIVE BIRTHS.......... 256,480 119,418 53,878 28,582 27,186 2,588 INFANT DEATHS........ 1,213 522 225 135 149 25 INF.MORT.RATE........ 4.7 4.4 4.2 4.7 5.5 9.7 3,500-3,999 GRAMS LIVE BIRTHS........ 134,667 52,506 33,738 20,748 17,512 1,235 INFANT DEATHS...... 521 196 111 76 82 8 INF.MORT.RATE...... 3.9 3.7 3.3 3.7 4.7 6.5 4,000-4,499 GRAMS LIVE BIRTHS........ 29,926 9,896 7,966 5,622 4,718 280 INFANT DEATHS...... 104 39 19 18 17 2 INF.MORT.RATE...... 3.5 3.9 2.4 3.2 3.6 7.1 4,500-4,999 GRAMS LIVE BIRTHS........ 4,602 1,481 1,205 911 767 48 INFANT DEATHS...... 38 14 6 8 6 3 INF.MORT.RATE...... 8.3 9.5 5.0 8.8 7.8 62.5 5,000+ GRAMS LIVE BIRTHS........ 707 265 154 118 117 15 INFANT DEATHS...... 21 4 5 1 3 5 INF.MORT.RATE...... 29.7 15.1 32.5 8.5 25.6 333.3 NOT STATED LIVE BIRTHS........ 1,126 145 57 41 36 462 INFANT DEATHS...... 412 5 2 2 4 190 INF.MORT.RATE...... 365.9 34.5 35.1 48.8 111.1 411.3 1/ INCLUDES RACES OTHER THAN WHITE AND BLACK