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Knowledge of Folic Acid*

1999 North Carolina Pregnancy Risk Assessment Monitoring System Survey Results
  No Yes
Demographic Groups Total Respondents N % 95% C.I. N % 95% C.I.
Total 1759 421 23.2 20.6-25.9 1338 76.8 74.1-79.4
Age
< 20 years 268 106 39.1 31.3-47.6 162 60.9 52.4-68.7
20-24 years 459 146 33.6 28.2-39.6 313 66.4 60.4-71.8
25-34 years 832 128 13.9 11.1-17.2 704 86.1 82.8-88.9
35+ years 200 41 17.1 11.2-25.2 159 82.9 74.8-88.8
Mother's Race
White 1182 224 19.2 16.5-22.3 958 80.8 77.7-83.5
African American 513 173 32.8 27.1-39.1 340 67.2 60.9-72.9
Other Minorities 64 24 43.4 28.2-60.0 40 56.6 40.0-71.8
Hispanic origin
Yes 111 40 39.7 29.3-51.2 71 60.3 48.8-70.7
No 1648 381 21.6 19.1-24.4 1267 78.4 75.6-80.9
Education
< High School 407 174 45.2 38.7-51.9 233 54.8 48.1-61.3
High School 581 164 26.0 21.4-31.2 417 74.0 68.8-78.6
> High School 770 83 9.7 7.4-12.6 687 90.3 87.4-92.6
Marital Status
Married 1150 194 17.5 14.8-20.5 956 82.5 79.5-85.2
Other 609 227 35.9 30.7-41.4 382 64.1 58.6-69.3
Income
15,999 or less 516 177 36.4 30.8-42.4 339 63.6 57.6-69.2
16,000-24,999 274 73 24.2 18.1-31.5 201 75.8 68.5-81.9
25,000-39,999 264 57 21.7 15.9-28.9 207 78.3 71.1-84.1
40,000 or more 532 52 8.6 6.1-12.1 480 91.4 87.9-93.9
WIC recipient
No 921 166 16.4 13.5-19.8 755 83.6 80.2-86.5
Yes 827 255 30.9 26.8-35.4 572 69.1 64.6-73.2
Medicaid recipient
No 868 125 14.1 11.4-17.4 743 85.9 82.6-88.6
Yes 891 296 33.1 28.9-37.5 595 66.9 62.5-71.1
Infant's birth weight
Under 1500 grams 327 93 29.9 24.9-35.3 234 70.1 64.7-75.1
1500-2499 grams 547 140 27.4 23.7-31.5 407 72.6 68.5-76.3
2500+ grams 880 187 22.8 20.0-25.7 693 77.2 74.3-80.0

*Survey Question:
20. Have you ever heard or read that taking the vitamin folic acid can help prevent some birth
defects?

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