TABLE A8. LIVE BIRTHS AND PERCENTAGE DISTRIBUTION, BY WHETHER MOTHER RECEIVED PRENATAL CARE, TIME DURING PREGNANCY CARE BEGAN, AND RACE OF MOTHER MISSISSIPPI, 1999 NUMBER PERCENT PRENATAL CARE AND NON- NON- TIME CARE BEGAN TOTAL WHITE WHITE TOTAL WHITE WHITE TOTAL 42,678 22,652 20,026 100.0 100.0 100.0 NO PRENATAL CARE 449 81 368 1.0 0.4 1.8 SOME PRENATAL CARE 42,031 22,497 19,534 98.5 99.3 97.5 FIRST TRIMESTER 34,571 20,090 14,481 81.0 88.7 72.3 SECOND TRIMESTER 6,278 2,070 4,208 14.7 9.1 21.0 THIRD TRIMESTER 1,043 289 754 2.4 1.3 3.8 UNKNOWN MONTH 139 48 91 0.3 0.2 0.4 UNKNOWN WHETHER ANY PRENATAL CARE 198 74 124 0.5 0.3 0.6 TABLE A9. LIVE BIRTHS AND PERCENTAGE DISTRIBUTION, BY MATURITY AND RACE OF MOTHER MISSISSIPPI, 1999 NUMBER PERCENT NON- NON- MATURITY* TOTAL WHITE WHITE TOTAL WHITE WHITE TOTAL 42,678 22,652 20,026 100.0 100.0 100.0 IMMATURE ONLY** 1,719 673 1,046 4.0 3.0 5.2 PREMATURE ONLY** 3,917 1,691 2,226 9.2 7.5 11.1 BOTH IMMATURE AND PREMATURE 2,702 999 1,703 6.3 4.4 8.5 TOTAL IMMATURE 4,421 1,672 2,749 10.4 7.4 13.7 TOTAL PREMATURE 6,619 2,690 3,929 15.5 11.9 19.6 TOTAL IMMATURE AND/OR PREMATURE 8,338 3,363 4,975 19.5 14.8 24.8 NEITHER IMMATURE NOR PREMATURE** 34,340 19,289 15,051 80.5 85.2 75.2 * IMMATURE - BIRTHWEIGHT LESS THAN 5 1/2 POUNDS (2,500 GRAMS); PREMATURE - GESTATION LESS THAN 37 WEEKS (CALCULATED BY SUBTRACTING THE DATE OF THE LAST NORMAL MENSTRUAL PERIOD PRIOR TO DELIVERY FROM THE DATE OF BIRTH). ** BIRTHS CLASSIFIED AS IMMATURE ONLY OR AS PREMATURE ONLY INCLUDE SOME FOR WHICH THE OTHER MEASUREMENT WAS UNKNOWN. THOSE CLASSIFIED AS NEITHER IMMATURE NOR PREMATURE INCLUDE SOME FOR WHICH ONE OR BOTH MEASUREMENTS WERE UNKNOWN.