Table 2.
Total sample (n = 201) | Children (n = 75) | Adolescents (n = 126) | ||||
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Wake-time | Sampling delay | Wake-time | Sampling delay | Wake-time | Sampling delay | |
Awake0 | −.10 | .14† | −.14 | .24 * | −.08 | .08 |
AUCAG | −.24 * | .03 | −.24 * | .05 | −.26 * | .03 |
AUCI | −.14† | −.08 | −.18 | −.13 | −.14 | −.06 |
AUCTG | −.17 * | −.00 | −.20 | −.02 | −.19 * | .01 |
Diurnal slope | ||||||
Slopeawake | .05 | −.12 | .04 | −.23 * | .05 | −.06 |
Slopemax | .22 * | −.02 | .16 | −.05 | .24 * | .00 |
Note: β = standardized beta coefficients. Regression models include age, wake-time, and sampling delay; β not shown for age. Wake-time was determined by accelerometer. Sampling delay = absolute difference between wake-time and time of awake0 sample. Awake0 = initial cortisol value at wake-time. AUCAG = area under the curve relative to ground, for awakening response. AUCI = area under the curve relative to increase, for awakening response. AUCTG = area under curve relative to ground, for entire diurnal profile. Slopeawake = diurnal slope anchored to awake using regression. Slopemax = diurnal slope anchored to max sample using regression. Bold values indicate statistical significance.
p < .05.
p < .06.