Clinical Study
Maternal BMI, IGF-I Levels, and Birth Weight in African American and White Infants
Table 2
Characteristics of study participants by Infant IGF-I levels (ng/L).
| | | IGF-I Levels | value | | | ≤3rd tertile ()
| >3rd tertile ()
|
| | Maternal age at enrollment (yrs) | | | 0.65 | | 18–25 () | 50 (29%) | 28 (35%) | | | 26–30 () | 54 (32%) | 22 (27%) | | | >30 () | 66 (68%) | 31 (38%) | | | Maternal BMI | | | 0.28 | | <30 () | 104 (68%) | 55 (75%) | | | ≥30 () | 48 (32%) | 18 (25%) | | | Race | | | 0.83 | | African American () | 86 (51%) | 40 (500%) | | | White () | 64 (38%) | 33 (4111%) | | | Other () | 18 (11%) | 7 (9%) | | | Education | | | 0.38 | | <High School HS Graduate/GED () | 67 (40%) | 28 (35%) | | | Some College/College Graduate/ | 99 (60%) | 53 (65%) | | Graduate Education () | | Delivery route | | | 0.14 | | Vaginal () | 94 (55%) | 55 (68%) | | | Caesarean section () | 75 (44%) | 26 (32%) | | | Maternal smoking | | | 0.63 | | Never smoked () | 95 (56%) | 40 (49%) | | | Smoked during periconception () | 27 (16%) | 15 (19%) | | | Quit smoking before periconception () | 48 (28%) | 26 (32%)
| | | Gender of infant | | | 0.29 | | Male () | 75 (44%) | 30 (37%) | | | Female () | 95 (56%) | 51 (63%)
| | | Mean Gestational age in weeks (SD)* | 39 (1.16) | 39 (1.08) | 0.91 | | Mean Birth weight (SD)* | 3273 (460.6) | 3414.74 (523.5)
| 0.56 |
|
|
Numbers do not necessarily add up due to missing values.
*Unadjusted.
|
