Table 2.
Laboratory measures of pregnant women at enrollment, overall and according to maternal body mass index adjusted for length of gestation (adjBMI) at enrollment
| Maternal adjBMI (kg/m2) at Enrollment | ||||||
|---|---|---|---|---|---|---|
| Underweight | Normal | Over-Weight | Obese | |||
| Enrollment laboratory measure | Overall N=697 | (≥10.0 - <19.8) n=109 | (≥19.8 - <26.1) n=418 | (≥26.1 - <29.0) n=88 | (≥29.0 - <50.0) n=82 | P value1 |
| Bicarbonate (mmol/l): | ||||||
| Mean (SD) | 22.64 (2.58) | 23.13 (2.06) | 22.64 (2.50) | 22.41 (3.54) | 22.11 (2.30) | |
| Median | 23.00 | 23.00 | 23.00 | 22.00 | 22.00 | 0.0066 |
| BUN (mmol/l): | ||||||
| Mean (SD) | 3.84 (2.55) | 3.50 (1.83) | 4.03 (2.69) | 3.77 (2.77) | 3.34 (2.30) | |
| Median | 2.86 | 2.86 | 3.21 | 2.86 | 2.50 | 0.023 |
| Glucose (mmol/l): | ||||||
| Mean (SD) | 4.27 (0.77) | 4.16 (0.92) | 4.28 (0.68) | 4.21 (0.83) | 4.42 (0.90) | |
| Median | 4.16 | 4.11 | 4.22 | 4.11 | 4.33 | 0.075 |
| AST/SGOT (µkat/l): | ||||||
| Mean (SD) | 0.35 (0.23) | 0.37 (0.29) | 0.36 (0.23) | 0.34 (0.15) | 0.33 (0.20) | |
| Median | 0.30 | 0.30 | 0.30 | 0.30 | 0.29 | 0.51 |
| ALT/SGPT (µkat/l): | ||||||
| Mean (SD) | 0.36 (0.26) | 0.40 (0.34) | 0.35 (0.24) | 0.35 (0.20) | 0.41 (0.30) | |
| Median | 0.32 | 0.32 | 0.32 | 0.32 | 0.38 | 0.13 |
| Albumin (g/dL): | ||||||
| Mean (SD) | 33.75 (4.31) | 33.28 (4.15) | 33.92 (4.32) | 34.11 (4.74) | 33.12 (3.95) | |
| Median | 34.00 | 33.00 | 34.00 | 35.00 | 33.00 | 0.24 |
| Total protein (g/dl): | ||||||
| Mean (SD) | 71.0 (6.1) | 71.2 (6.0) | 71.0 (5.9) | 70.6 (7.5) | 71.5 (5.7) | |
| Median | 70.0 | 71.0 | 70.0 | 69.0 | 71.0 | 0.59 |
| Cholesterol (mmol/l): | ||||||
| Mean (SD) | 5.32 (1.16) | 5.24 (1.25) | 5.24 (1.12) | 5.56 (1.15) | 5.61 (1.19) | |
| Median | 5.20 | 5.16 | 5.17 | 5.59 | 5.57 | 0.012 |
| Triacylglycerol (mmol/l): | ||||||
| Mean (SD) | 2.18 (0.98) | 2.14 (0.98) | 2.20 (1.04) | 2.11 (0.81) | 2.19 (0.86) | |
| Median | 2.01 | 1.90 | 2.03 | 1.96 | 2.07 | 0.86 |
| Hemoglobin (mmol/l): | ||||||
| Mean (SD) | 6.83 (0.78) | 6.66 (0.81) | 6.82 (0.79) | 6.91 (0.76) | 6.95 (0.71) | |
| Median | 6.83 | 6.70 | 6.86 | 6.95 | 7.01 | 0.049 |
1
The p-values for associations between maternal adjBMI and laboratory measures at enrollment are based on the non-parametric Kruskal-Wallis test of equality of means.