Table 1. Maternal antenatal booking characteristics according to WHO BMI category.
Values are mean and standard deviation (SD) for continuous variables or number (%) for categorical variables. ANOVAwas used to test for differences among groups (*on log transformed where appropriate). Chi squared test was used to test for differences among groups for categorical variables. Different superscript letters indicate differences between individual groups using post hoc Tukey-Kramer test or subgroup chi-squared test.
| Normal weight (n=13) |
Overweight (n=15) |
Obese (n=27) |
P value | |
|---|---|---|---|---|
| Booking visit | ||||
| Age* (years) |
27 (4)a | 29 (6)a,b | 29 (6)b | 0.029 |
| Smokers (number (%)) |
7 (54) | 3 (20) | 10 (37) | 0.18 |
| Deprivation Index DEPCAT Score (number (%)) |
||||
| Affluent (1-2) | 1 (8) | 3 (20) | 1 (4) | |
| Intermediate (3-5) | 5 (38) | 3 (20) | 10 (37) | 0.74 |
| Deprived (6-7) | 7 (54) | 9 (60) | 16 (59) | |
| Parity (number (%)) |
||||
| 0 | 6 (46) | 7 (47) | 12 (44) | 0.99 |
| >0 | 7 (54) | 8 (53) | 15 (56) | |
| BMI* (kg/m2) |
21.2 (1.9)a | 26.1 (1.0)b | 33.7 (4.2)c | <0.001 |
| Systolic Blood Pressure* (mmHg) |
107 (12)a | 117 (9)b | 124 (11)b | <0.001 |
| Diastolic Blood Pressure* (mmHg) |
61 (6)a | 68 (7)a, b | 73 (10)b | <0.001 |
| LPL S447X genotype (SS:SX, number (%)) |
7:6 (54:46) a | 14:1 (93:7) b | 22:5 (81:19) a,b | 0.035 |
| At delivery | ||||
| Gestation at delivery (weeks)* |
39.6 (1.3) | 39.9 (0.9) | 40.0 (1.5) | 0.46 |
| Placental weight* (g) |
649 (143)a | 817 (162)b | 790 (177 b | 0.020 |
| Birth weight* (g) |
3246 (521)a | 3829 (533)b | 3659 (512)a, b | 0.015 |
| Birth Weight Centile | 38 (32)a | 61 (34)a, b | 74 (21)b | 0.001 |