Comparison of male and female subjects.

<p>Age and sleep duration are expressed as mean ± SD, whilst BMI, waist, hip, diastolic and systolic blood pressure are given as median (interquartile range) and the remaining variables are expressed as percentages</p><p>**p<0.01</p><p>***p<0.001 versus males.</p><p>Comparison of male and female subjects.