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Infant Gestation Duration*

1998 North Carolina Pregnancy Risk Assessment Monitoring System Survey Results
  37 or more weeks Less than 37 weeks
Demographic Groups Total Respondents N % 95% C.I. N % 95% C.I.
Total 1755 1020 88.6 87.0-90.0 735 11.4 10.0-13.0
Age
< 20 years 269 144 86.2 81.3-90.0 125 13.8 10.0-18.7
20-24 years 482 277 88.5 85.3-91.1 205 11.5 8.9-14.7
25-34 years 802 497 89.9 87.6-91.8 305 10.1 8.2-12.4
35+ years 202 102 85.6 79.5-90.2 100 14.4 9.8-20.5
Mother's Race
White 1155 721 89.7 87.8-91.3 434 10.3 8.7-12.2
African American 531 257 84.8 81.4-87.6 274 15.2 12.4-18.6
Other Minorities 69 42 91.4 83.6-95.7 27 8.6 4.3-16.4
Hispanic origin
Yes 82 54 94.4 89.1-97.3 28 5.6 2.7-10.9
No 1673 966 88.1 86.5-89.6 707 11.9 10.4-13.5
Education
< High School 363 200 87.4 83.6-90.4 163 12.6 9.6-16.4
High School 592 339 88.7 85.8-91.0 253 11.3 9.0-14.2
> High School 798 479 88.9 86.5-91.0 319 11.1 9.0-13.5
Marital Status
Married 1148 703 89.7 87.9-91.4 445 10.3 8.6-12.1
Other 607 317 86.1 82.9-88.8 290 13.9 11.2-17.1
Income
15,999 or less 531 301 88.2 85.1-90.7 230 11.8 9.3-14.9
16,000-24,999 273 159 87.8 83.2-91.3 114 12.2 8.7-16.8
25,000-39,999 284 172 90.0 85.9-93.0 112 10.0 7.0-14.1
40,000 or more 526 320 89.1 86.0-91.5 206 10.9 8.5-14.0
WIC recipient
No 935 552 88.8 86.5-90.7 383 11.2 9.3-13.5
Yes 801 458 88.3 85.8-90.3 343 11.7 9.7-14.2
Medicaid recipient
No 888 554 90.5 88.4-92.2 334 9.5 7.8-11.6
Yes 867 466 86.4 83.8-88.6 401 13.6 11.4-16.2
Infant's birth weight
Under 1500 grams 307 1 0.3 0.0- 1.8 306 99.7 98.2- 100
1500-2499 grams 554 181 33.5 29.6-37.7 373 66.5 62.3-70.4
2500+ grams 891 836 93.9 92.2-95.3 55 6.1 4.7- 7.8

*Survey Question:
Data in this table are constructed from survey question 34 and 35.

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