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Previous Premature Birth*

1998 North Carolina Pregnancy Risk Assessment Monitoring System Survey Results
  No Yes
Demographic Groups Total Respondents N % 95% C.I. N % 95% C.I.
Total 914 708 85.8 82.7-88.3 206 14.2 11.7-17.3
Age
< 20 years 41 28 81.8 61.5-92.7 13 18.2 7.3-38.5
20-24 years 251 192 85.9 79.7-90.4 59 14.1 9.6-20.3
25-34 years 491 391 87.1 83.1-90.2 100 12.9 9.8-16.9
35+ years 131 97 80.8 69.8-88.5 34 19.2 11.5-30.2
Mother's Race
White 601 473 86.1 82.5-89.1 128 13.9 10.9-17.5
African American 277 203 82.5 75.6-87.8 74 17.5 12.2-24.4
Other Minorities 36 32 98.7 96.3-99.6 4 1.3 0.4- 3.7
Hispanic origin
Yes 53 40 84.3 68.9-92.9 13 15.7 7.1-31.1
No 860 667 85.9 82.8-88.5 193 14.1 11.5-17.2
Education
< High School 178 124 78.0 69.1-84.8 54 22.0 15.2-30.9
High School 319 241 85.7 80.4-89.7 78 14.3 10.3-19.6
> High School 416 342 89.4 85.4-92.4 74 10.6 7.6-14.6
Marital Status
Married 653 521 87.3 84.0-90.1 132 12.7 9.9-16.0
Other 261 187 81.3 74.0-86.8 74 18.7 13.2-26.0
Income
15,999 or less 290 210 81.9 75.5-87.0 80 18.1 13.0-24.5
16,000-24,999 157 125 88.1 80.1-93.2 32 11.9 6.8-19.9
25,000-39,999 145 119 87.5 79.5-92.6 26 12.5 7.4-20.5
40,000 or more 267 212 86.9 81.5-90.9 55 13.1 9.1-18.5
WIC recipient
No 490 386 87.4 83.6-90.5 104 12.6 9.5-16.4
Yes 416 316 83.7 78.6-87.7 100 16.3 12.3-21.4
Medicaid recipient
No 454 366 87.1 83.0-90.3 88 12.9 9.7-17.0
Yes 460 342 84.3 79.5-88.1 118 15.7 11.9-20.5
Infant's birth weight
Under 1500 grams 139 78 54.8 46.2-63.2 61 45.2 36.8-53.8
1500-2499 grams 261 180 69.4 63.4-74.9 81 30.6 25.1-36.6
2500+ grams 513 449 87.2 83.9-89.9 64 12.8 10.1-16.1

*Survey Question:
3. Was the baby just before your new one born more than 3 weeks before its due date?

Percents based on fewer than 50 total respondents may not be reliable.
Interpret these percentages with caution. C.I. = confidence interval.