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Previous Premature Birth*

1997 North Carolina Pregnancy Risk Assessment Monitoring System Survey Results
  No Yes
Demographic Groups Total Respondents N % 95% C.I. N % 95% C.I.
Total 410 320 87.4 82.9-90.8 90 12.6 9.2-17.1
Age
< 20 years 28 23 90.7 63.4-98.2 5 9.3 1.8-36.6
20-24 years 101 76 82.7 72.1-89.9 25 17.3 10.1-27.9
25-34 years 214 169 89.4 83.2-93.4 45 10.6 6.6-16.8
35+ years 67 52 87.6 75.4-94.2 15 12.4 5.8-24.6
Mother's Race
White 267 218 86.2 80.4-90.5 49 13.8 9.5-19.6
African American 125 87 89.6 81.2-94.5 38 10.4 5.5-18.8
Other Minorities 18 15 91.6 65.1-98.5 3 8.4 1.5-34.9
Hispanic origin
Yes 10 9 98.2 85.8-99.8 1 1.8 0.2-14.2
No 400 311 87.1 82.6-90.6 89 12.9 9.4-17.4
Education
< High School 78 56 89.3 77.7-95.2 22 10.7 4.8-22.3
High School 152 114 83.8 74.6-90.1 38 16.2 9.9-25.4
> High School 180 150 89.3 83.1-93.4 30 10.7 6.6-16.9
Marital Status
Married 292 232 88.1 82.9-91.8 60 11.9 8.2-17.1
Other 118 88 85.4 75.0-92.0 30 14.6 8.0-25.0
Income
15,999 or less 141 108 88.4 79.7-93.7 33 11.6 6.3-20.3
16,000-24,999 53 38 71.9 51.8-85.9 15 28.1 14.1-48.2
25,000-39,999 65 51 87.8 75.7-94.3 14 12.2 5.7-24.3
40,000 or more 128 106 89.9 82.8-94.3 22 10.1 5.7-17.2
WIC recipient
No 216 171 88.8 83.1-92.8 45 11.2 7.2-16.9
Yes 190 146 85.7 78.1-91.0 44 14.3 9.0-21.9
Medicaid recipient
No 202 167 89.1 83.3-93.0 35 10.9 7.0-16.7
Yes 208 153 85.4 77.8-90.7 55 14.6 9.3-22.2
Infant's birth weight
Under 1500 grams 70 34 47.8 36.2-59.7 36 52.2 40.3-63.8
1500-2499 grams 117 90 76.6 67.8-83.6 27 23.4 16.4-32.2
2500+ grams 223 196 88.6 83.7-92.1 27 11.4 7.9-16.3

*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.