Table 2.
Distribution of plasma leptin concentrations according to maternal self-reported nightly sleep duration during early pregnancy
|
Early pregnancy |
Hours of sleep during pregnancy |
|||
|---|---|---|---|---|
| Plasma leptin (ng/ml) | ≤5 | 6 | 7-8 | ≥9 |
|
All women (N) |
28 |
44 |
485 |
273 |
| Mean ± SD |
27.3 ±19.7 |
24.3 ± 16.8 |
24.3 ± 17.1 |
27.0 ± 17.3 |
| (p* = 0.43) |
(p* = 0.98) |
(Reference) |
(p* = 0.04) |
|
|
**Lean women (N) |
23 |
34 |
379 |
205 |
| Mean ± SD |
20.6 ± 14.1 |
19.9 ± 13.6 |
20.5 ± 14.7 |
21.7 ± 13.4 |
| (p* = 0.98) |
(p* = 0.82) |
(Reference) |
(p* = 0.31) |
|
|
**Overweight/obese women (N) |
5 |
10 |
106 |
68 |
| Mean ± SD | 58.3 ± 8.0 |
39.1 ± 18.8 |
38.2 ± 18.6 |
43.0 ± 18.2 |
| (p* < 0.001) | (p* = 0.98) | (Reference) | (p* = 0.09) | |
*Pair-wise T-test p-value (each sleep duration group compared to reference group of 7–8 hours).
**Lean women (BMI <25 kg/m2); Overweight/Obese women (BMI ≥25 kg/m2).