Table 1.
Maternal demographic characteristics between California and San Bernardino County, 1999–2001
| California N = 1,504,140 |
San Bernardino County N = 86,736 |
|||
|---|---|---|---|---|
| Mean ± SD | Median | Mean ± SD | Median | |
| Birth weight (g) | ||||
| White | 3,412.0 ± 618.1 | 3,459 | 3,376.6 ± 610.2 | 3,416 |
| Black | 3,145.0 ± 718.8 | 3,224 | 3,111.6 ± 703.8 | 3,203 |
| Hispanic | 3,359.0 ± 598.6 | 3,393 | 3,342.5 ± 698.7 | 3,374 |
| Other | 3,239.0 ± 587.3 | 3,260 | 3,247.2 ± 588.8 | 3,282 |
| Overall | 3,347.5 ± 616.1 | 3,380 | 3,326.0 ± 617.0 | 3,370 |
| Age (in years) | ||||
| White | 29.6 ± 6.30 | 30 | 27.2 ± 6.15 | 27 |
| Black | 26.5 ± 6.71 | 26 | 25.6 ± 6.45 | 24 |
| Hispanic | 26.3 ± 6.21 | 26 | 25.9 ± 6.19 | 25 |
| Other | 29.9 ± 6.12 | 30 | 29.4 ± 6.66 | 29 |
| Overall | 27.8 ± 6.48 | 28 | 26.5 ± 6.30 | 26 |
| Length of gestation (days) | ||||
| White | 277.0 ± 31.25 | 277 | 276.9 ± 34.40 | 277 |
| Black | 272.7 ± 34.59 | 276 | 272.4 ± 38.14 | 275 |
| Hispanic | 276.2 ± 28.34 | 277 | 276.0 ± 31.25 | 276 |
| Other | 275.1 ± 25.08 | 276 | 275.2 ± 32.44 | 275 |
| Overall | 276.1 ± 29.38 | 277 | 275.9 ± 33.07 | 276 |
| Number | Rate | Number | Rate | |
| Infant mortality rate | ||||
| White | 2,401 | 4.9 | 194 | 6.9 |
| Black | 1,171 | 12.5 | 117 | 14.3 |
| Hispanic | 3,985 | 5.5 | 290 | 6.3 |
| Other | 1,039 | 5.3 | 35 | 7.1 |
| Moderately low birth weight rate | ||||
| White | 23,183 | 4.8 | 1,386 | 5.0 |
| Black | 8,388 | 9.0 | 737 | 9.1 |
| Hispanic | 33,715 | 4.6 | 2,108 | 4.6 |
| Other | 11,664 | 6.0 | 279 | 5.7 |
| Very low birth weight rate | ||||
| White | 6,420 | 1.3 | 388 | 1.4 |
| Black | 3,407 | 3.6 | 317 | 3.9 |
| Hispanic | 9,807 | 1.4 | 69 | 1.5 |
| Other | 2,741 | 1.4 | 82 | 1.7 |