Table 3.
Partial Correlations between Sleep Duration and Metabolic Risk Factors
| Sleep diary-measuredtotal sleep time | Actigraphy-measured total sleep time | |||
|---|---|---|---|---|
|
| ||||
| r | P | r | p | |
| All participants | ||||
| Triglycerides | −.35 | .002 | −.30 | .009 |
| Cholesterol | −.28 | .017 | −.20 | .09 |
| VLDL cholesterol | −.36 | .002 | −.31 | .007 |
| LDL cholesterol | −.18 | .12 | −.23 | .049 |
| HDL cholesterol | −.02 | .88 | .27 | .022 |
| HDL: cholesterol ratio | −.17 | .14 | −.37 | .001 |
| Truncal fat percentage | −.31 | .007 | −.44 | <.001 |
| PTSD group | ||||
| Triglycerides | −.40 | .011 | −.41 | .007 |
| Cholesterol | −.17 | .28 | −.17 | .30 |
| VLDL cholesterol | −.40 | .010 | −.42 | .006 |
| LDL cholesterol | −.04 | .79 | −.19 | .23 |
| HDL cholesterol | .02 | .91 | .40 | .009 |
| HDL: cholesterol ratio | −.09 | .60 | −.40 | .009 |
| Truncal fat percentage | −.24 | .13 | −.42 | .006 |
| Control group | ||||
| Triglycerides | .06 | .74 | .05 | .77 |
| Cholesterol | −.14 | .43 | −.13 | .48 |
| VLDL cholesterol | .05 | .76 | .05 | .78 |
| LDL cholesterol | −.21 | .24 | −.23 | .19 |
| HDL cholesterol | .04 | .85 | .11 | .53 |
| HDL: cholesterol ratio | −.14 | .42 | −.22 | .22 |
| Truncal fat percentage | −.44 | .009 | −.48 | .004 |
Note. Partial correlations controlled for body fat percentage. VLDL = very low density lipoprotein. LDL = low density lipoprotein. HDL = high density lipoprotein.