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. Author manuscript; available in PMC: 2018 Jan 18.
Published in final edited form as: Dev Psychobiol. 2015 Aug 19;57(8):935–947. doi: 10.1002/dev.21324

Table 2.

Descriptive Statistics of Cortisol Samples

Time of Sample
Cortisol Value (in ug/dl)
Log-Transformed Cortisol Value
N M (SD) Min Max M (SD) Min Max M (SD) Min Max
High risk (n = 53)
 Wake—Day 1 45 7:52 (1:00) 5:30 10:12 .21 (.20) .01 .85 −.90 (.49) −2.05 −.07
 Wake—Day 2 45 8:03 (1:04) 5:30 11:00 .18 (.16) .00 .70 −.97 (.56) −3.00 −.16
 Wake—Day 3 42 8:02 (1:07) 5:30 10:34 .27 (.17) .00 .69 −1.00 (.48) −2.40 −.16
 Bed—Day 1 46 8:50 (1:04) 6:00 11:34 .13 (.13) .01 .47 −1.10 (.46) −2.10 −.33
 Bed—Day 2 47 9:01 (0:52) 7:19 11:00 .16 (.16) .00 .69 −.96 (.47) −2.10 −.16
 Bed—Day 3 46 8:57 (0:57) 6:30 11:36 .17 (.18) .02 .83 −.96 (.43) −1.80 −.08
Low risk (n = 41)
 Wake—Day 1 37 8:07 (1:15) 5:50 10:42 .26 (.23) .03 1.00 −.74 (.37) −1.60 .00
 Wake—Day 2 38 8:15 (1:19) 5:45 12:00 .20 (.10) .02 .46 −.77 (.29) −1.62 −.34
 Wake—Day 3 38 7:59 (1:12) 5:40 10:30 .23 (.16) .02 .68 −.76 (.36) −1.74 −.17
 Bed—Day 1 36 9:32 (1:02) 7:30 12:16 .07 (.12) .00 .51 −1.53 (.60) −2.40 −.29
 Bed—Day 2 38 9:16 (1:08) 5:45 12:00 .09 (.14) .00 .56 −1.46 (.65) −2.70 −.25
 Bed—Day 3 34 9:33 (1:22) 7:00 12:45 .12 (.15) .00 .62 −1.31 (.63) −2.40 −.21