Table 2.
Participant demographics.
| Participant Characteristics | NW | OW/OB | p |
|---|---|---|---|
| (n = 24) | (n = 33) | ||
| Maternal Age: years, mean (SD) | 31.00 (3.66) | 31.61 (3.06) | 0.5 |
| * Maternal Pre-Pregnancy BMI: kg/m2, mean (SD) | 21.25 (1.99) | 30.95 (4.69) | <0.001 |
| * Maternal Race/Ethnicity | 0.002 | ||
| Caucasian, no. (%) | 11 (46) | 28 (85) * | |
| African American, no. (%) | 2 (8) | 1 (3) | |
| Hispanic/Latino, no. (%) | 4 (17) | 1 (3) | |
| Asian/Pacific Islander, no. (%) | 6 (25) | 1 (3) | |
| Indian, no. (%) | 1 (4) | 0 (0) | |
| N/A, no. (%) | 0 (0) | 2 (6) | |
| Gestational Age: weeks, mean (SD) | 39.5 (1.0) | 39.1 (1.3) | 0.16 |
| Mode of Delivery | 0.39 | ||
| Vaginal, no. (%) | 18 (75) | 20 (60) | |
| C-section, no. (%) | 6 (25) | 13 (40) | |
| Country | 0.1 | ||
| Washtenaw, no. (%) | 18 (75) | 17 (52) | |
| Other, no. (%) | 6 (25) | 16 (49) | |
| Maternal income: dollars, mean (SD) | 0.04 | ||
| <60,000, no. (%) | 21 (88) | 19 (68) | |
| >60,000, no. (%) | 3 (12) | 9 (32) | |
| Unknown, no. (%) | 0 (0) | 5 (15) | |
| Smoker | >0.99 | ||
| Yes, no. (%) | 1 (4) | 1 (3) | |
| No, no. (%) | 19 (80) | 27 (82) | |
| N/A, no. (%) | 4 (17) | 5 (15) | |
| Infant birth weight: kg mean (SD) | 3.42 (0.36) | 3.52 (0.42) | 0.35 |
| Infant birth weight: Z-score mean (SD) | 0.33 (0.78) | 0.42 (0.81) | 0.68 |
| Infant sex | >0.99 | ||
| Male, no. (%) | 11 (54) | 16 (49) | |
| Female, no. (%) | 13 (54) | 17 (51) | |
| Infant age at 2 week time point: days, mean (SD) | 15.9 (3) | 16.9 (3) | 0.27 |
| Infant age at 2 month time point: days, mean (SD) | 62.0 (7.2) | 62.5 (6.7) | 0.8 |
Descriptive statistics on maternal and infant demographics from the cohort of 57 mother-infant dyads presented as the mean (standard deviation) or number (percentage). The sample size is slightly smaller than the totals presented for infants aged at 2 weeks (missing data for 9 infants). Statistical analysis using a t-test or Fischer’s exact test. * represents statistical significance, with a p-value < 0.05. Abbreviations: normal weight (NW), overweight and obesity (OW/OB), not available (N/A) number (no.). BMI p < 0.001, Maternal race/ethnicity p = 0.002.