Table 2. Trends in measures of perinatal health: United States, 1990-2002
| Year | Preterm1 | Low birthweight2 | ||||||
| Number | Percent | Number | Percent | |||||
| Total | Very preterm1 | Moderately perterm1 | Total | Very low birthweigth2 | Moderately low birthweight2 | |||
| 2002 | 480,812 | 12.1 | 2.0 | 10.1 | 314,077 | 7.8 | 1.5 | 6.4 |
| 2001 | 476,250 | 11.9 | 1.9 | 10.0 | 308,747 | 7.7 | 1.4 | 6.2 |
| 2000 | 467,201 | 11.6 | 1.9 | 9.7 | 307,030 | 7.6 | 1.4 | 6.1 |
| 1999 | 460,853 | 11.8 | 2.0 | 9.8 | 301,183 | 7.6 | 1.5 | 6.2 |
| 1998 | 452,275 | 11.6 | 2.0 | 9.6 | 298,208 | 7.6 | 1.4 | 6.1 |
| 1997 | 436,600 | 11.4 | 1.9 | 9.4 | 291,154 | 7.5 | 1.4 | 6.1 |
| 1996 | 423,107 | 11.0 | 1.9 | 9.1 | 287,230 | 7.4 | 1.4 | 6.0 |
| 1995 | 424,455 | 11.0 | 1.9 | 9.1 | 285,152 | 7.3 | 1.3 | 6.0 |
| 1994 | 431,613 | 11.0 | 1.9 | 9.1 | 287,607 | 7.3 | 1.3 | 6.0 |
| 1993 | 435,625 | 11.0 | 1.9 | 9.1 | 288,482 | 7.2 | 1.3 | 5.9 |
| 1992 | 430,239 | 10.7 | 1.9 | 8.8 | 287,493 | 7.1 | 1.3 | 5.8 |
| 1991 | 440,082 | 10.8 | 1.9 | 8.9 | 292,230 | 7.1 | 1.3 | 5.8 |
| 1990 | 436,590 | 10.6 | 1.9 | 8.7 | 289,418 | 7.0 | 1.3 | 5.7 |
| Year | Late fetal mortality3 |
Early neonatal mortality4 |
Perinatal mortality5 | |||||
| Number | Rate | Number | Rate | Number | Rate | |||
| 20026 | 12,871 | 3.2(3.19) | 15,003 | 3.7 | 27,874 | 6.9 | ||
| 2001 | 13,251 | 3.3(3.28) | 14,611 | 3.6 | 27,862 | 6.9 | ||
| 2000 | 13,506 | 3.3 | 14,913 | 3.7 | 28,419 | 7.0 | ||
| 1999 | 13,427 | 3.4 | 14,889 | 3.8 | 28,316 | 7.1 | ||
| 1998 | 13,474 | 3.4 | 15,073 | 3.8 | 28,547 | 7.2 | ||
| 1997 | 13,686 | 3.5 | 14,859 | 3.8 | 28,545 | 7.3 | ||
| 1996 | 14,078 | 3.6 | 14,968 | 3.8 | 29,046 | 7.4 | ||
| 1995 | 14,251 | 3.6 | 15,515 | 4.0 | 29,766 | 7.6 | ||
| 1994 | 14,781 | 3.7 | 16,523 | 4.2 | 31,304 | 7.9 | ||
| 1993 | 15,297 | 3.8 | 17,395 | 4.3 | 32,692 | 8.1 | ||
| 1992 | 16,782 | 4.1 | 17,798 | 4.4 | 34,580 | 8.5 | ||
| 1991 | 17,010 | 4.1 | 18,916 | 4.6 | 35,926 | 8.7 | ||
| 1990 | 17,959 | 4.3 | 20,020 | 4.8 | 37,979 | 9.1 | ||
|
1 Less than 37 completed weeks of gestation. Very preterm is less than 32 completed weeks of gestation. Moderately preterm is 32-36 completed weeks of gestation. 2 Less than 2,500 grams. Very low birthweight is less than 1,500 grams. Moderately low birthweight is 1,500-2,499 grams. 3 The late fetal mortality rate = fetal deaths with stated or presumed gestational ages of 28 weeks or more per 1,000 live births plus late fetal deaths. 4 Deaths to infants less than 7 days per 1,000 live births. 5 Late fetal deaths plus infant deaths less than 7 days per 1,000 live births plus late fetal deaths. 6 Partially edited data processed as of January 2004. SOURCE: Various CDC/NCHS publications; see text. |
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