Table 1 |
|||
|
Characteristics of the study group |
|||
|
Pregnant (n = 100) N or Mean (sd) |
Nonpregnant (n = 99) N or Mean (sd) |
p |
|
|
|
|||
|
Age (mean, sd) |
27.60 (5.90) |
30.17 (7.22) |
NSa |
|
Parity |
|||
|
0 |
37 |
41 |
NSb |
|
1 |
27 |
22 |
|
|
2 |
22 |
18 |
|
|
3 |
7 |
9 |
|
|
4 |
3 |
3 |
|
|
5 |
3 |
3 |
|
|
6 |
0 |
2 |
|
|
7 |
1 |
0 |
|
|
9 |
0 |
1 |
|
|
Race |
|||
|
Caucasian |
39 |
60 |
0.0002c |
|
African American |
12 |
20 |
|
|
Hispanic |
40 |
15 |
|
|
Native American |
5 |
2 |
|
|
Asian |
2 |
2 |
|
|
Other |
2 |
0 |
|
|
Estimated Gestational Age |
27.49 (9.36) |
N/A |
N/A |
|
Tobacco Use |
14 |
38 |
<0.0001c |
|
Number in Household |
|||
|
1 |
2 |
16 |
0.0106c |
|
2 |
23 |
25 |
|
|
3 |
26 |
20 |
|
|
4 |
30 |
23 |
|
|
>5 |
19 |
15 |
|
|
Median Income |
|||
|
<20,000 |
23 |
17 |
0.5951c |
|
20,000-39,999 |
20 |
19 |
|
|
40,000-59,999 |
7 |
13 |
|
|
>60,000 |
10 |
11 |
|
|
Unknown |
39 |
40 |
|
|
|
|||
|
a Student's t-test b Fisher's exact chi square test c Pearson's Chi-square test |
|||
|
Knudtson et al. Journal of Negative Results in BioMedicine 2010 9:6 doi:10.1186/1477-5751-9-6 |
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