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Change in Smoking: from 3 months Before to last 3 Months of Pregnancy*

1999 North Carolina Pregnancy Risk Assessment Monitoring System Survey Results
  Smoker who quit # cigarettes reduced # cigarettes same/more
Demographic Groups Total Respondents N % 95% C.I. N % 95% C.I. N % 95% C.I.
Total 481 196 47.5 41.4-53.7 217 38.2 32.5-44.3 68 14.2 10.4-19.2
Age
< 20 years 84 43 52.3 37.4-66.8 34 40.9 27.2-56.1 7 6.8 2.1-20.0
20-24 years 153 64 44.8 34.7-55.4 68 40.2 30.4-50.8 21 15.1 8.9-24.3
25-34 years 192 77 51.4 41.8-60.9 86 32.0 23.9-41.4 29 16.6 10.5-25.2
35+ years 52 12 31.7 15.7-53.6 29 52.7 32.7-71.8 11 15.7 5.5-37.4
Mother's Race
White 376 151 46.8 40.1-53.7 173 37.6 31.2-44.3 52 15.6 11.2-21.4
African American 93 41 52.3 37.6-66.7 37 38.5 25.2-53.7 15 9.2 3.9-20.2
Other Minorities 12 4 39.4 11.3-76.7 7 58.0 21.9-87.2 1 2.6 0.3-18.2
Hispanic origin
Yes 12 7 59.1 22.6-87.7 4 22.8 4.6-64.5 1 18.1 2.5-65.3
No 469 189 47.2 41.1-53.5 213 38.6 32.8-44.8 67 14.1 10.3-19.1
Education
< High School 148 44 41.9 31.0-53.7 73 38.7 28.3-50.3 31 19.4 11.8-30.1
High School 206 84 43.4 34.1-53.2 96 39.5 30.6-49.2 26 17.1 10.9-25.8
> High School 127 68 59.0 47.9-69.2 48 36.0 26.2-47.0 11 5.1 2.0-12.2
Marital Status
Married 281 126 51.9 44.1-59.6 123 37.2 30.1-45.0 32 10.8 6.8-16.9
Other 200 70 40.5 31.1-50.6 94 39.8 30.6-49.8 36 19.7 12.9-28.9
Income
15,999 or less 195 68 43.2 33.7-53.2 88 37.4 28.4-47.3 39 19.5 12.8-28.5
16,000-24,999 97 40 38.9 27.0-52.4 45 44.4 31.9-57.7 12 16.6 8.7-29.3
25,000-39,999 70 33 56.4 40.4-71.2 34 40.2 26.0-56.3 3 3.4 0.6-17.9
40,000 or more 83 43 58.2 43.8-71.3 33 33.8 21.8-48.3 7 7.9 2.8-20.4
WIC recipient
No 204 81 51.1 41.8-60.4 98 39.7 31.0-49.1 25 9.2 5.1-16.1
Yes 276 114 44.7 36.8-52.9 119 37.4 30.0-45.5 43 17.9 12.4-25.1
Medicaid recipient
No 164 87 59.6 49.5-68.9 63 31.7 23.2-41.5 14 8.7 4.4-16.6
Yes 317 109 40.3 32.9-48.3 154 42.1 34.7-50.0 54 17.5 12.3-24.3
Infant's birth weight
Under 1500 grams 97 39 41.4 31.9-51.7 43 43.1 33.5-53.2 15 15.5 9.5-24.3
1500-2499 grams 177 54 29.5 23.2-36.7 98 54.8 47.3-62.1 25 15.7 10.8-22.2
2500+ grams 206 103 49.5 42.6-56.3 75 36.5 30.1-43.3 28 14.1 9.9-19.7

*Survey Question:
Among Smokers, change in smoking during pregnancy: from 3 months before to last 3 months of pregnancy.

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