Demographic variables^a across experimental groups.

a<p>If not otherwise specified, median (25 percentile; 75 percentile) is reported.</p>b<p>Number of pregnant women (percent) is reported.</p

Cortisol concentrations in women with low, moderate, and high compliance.

<p>Saliva cortisol concentrations were averaged across two sampling days representing estimated values from a linear mixed model.</p

Self-reported and objective compliance with scheduled saliva sampling across experimental groups.

a<p>Number in sample for self-reported compliance is four less than number in sample for objective compliance because of missing data in self-report questionnaires.</p>b<p>Including the +30-min, +45-min, and +60-min samples on two consecutive days.</p>c<p>Including the +30-min, +45-min, +60-min samples and the 1100 h, 1500 h, 2000 h, and 2200 h samples on two consecutive days.</p><p>SD, standard deviation.</p