Table 1.
Demographic characteristics of women with a pregnancy from Charleston, South Carolina, among case women with preterm births and control women with term births.
| Covariate | Preterm births (n = 26) | Term births (n = 26) | p-value |
|---|---|---|---|
| Age, years (mean ± SD) | 27.4 ± 4.9 | 28.9 ± 5.8 | 0.333a |
| BMI, kg/m2, (mean ± SD) | 30.1 ± 7.9 | 27.0 ± 6.1 | 0.129a |
| Race, n (%) | 1.000b | ||
| White | 13 (50.0) | 13 (50.0) | - |
| Black | 13 (50.0) | 13 (50.0) | - |
| Education, n (%) | 0.145b | ||
| < College | 15 (57.7) | 8 (30.8) | - |
| > College | 10 (38.5) | 15 (57.7) | - |
| Missing | 1 (3.8) | 3 (11.5) | - |
| Season of collection, n (%) | 0.613b | ||
| Spring | 5 (19.2) | 7 (26.9) | - |
| Summer | 7 (26.9) | 7 (26.9) | - |
| Fall | 5 (19.2) | 7 (26.9) | - |
| Winter | 9 (34.6) | 5 (19.2) | - |
| Smoking status, n (%) | 1.000c | ||
| Never smoked | 25 (96.2) | 24 (92.3) | - |
| Current smokerd | 1 (3.8) | 2 (7.7) | - |
| Infant sex, n (%) | 0.049b | ||
| Male | 19 (73.1) | 11 (42.3) | - |
| Female | 7 (26.9) | 15 (57.7) | - |
| Specific gravity corrected urinary glyphosate concentration, ng/mL (median ± IQR) | 0.06 ± 0.35 | 0.05 ± 0.15 | 0.634e |
NOTE:
a
Student’s t-test;
b
Chi-Square test of independence;
c
Fisher’s exact test;
d
current smoker or quit since learning of pregnancy;
e
Mann Whitney U test
Abbreviations: BMI, body mass index; IQR, interquartile range; SD, standard deviation