Table 2.

Descriptive Statistics for Cortisol (log₁₀) and Stressors

	M	SD	Median	Range
NBAS (n = 62)
Prestressor cortisol	–0.53	0.37	–0.57	–2.0–.51
20-min poststressor cortisol	–0.42	0.43	–0.46	–2.0–.45
45-min poststressor cortisol	–0.48	0.39	–0.57	–1.52–.35
Length of NBAS (min)	20.54	5.48	20.00	12–32
Time of day of NBAS	13:52	2:48	13:47	9:35–19:51
Heel stick (n = 64)
Prestressor cortisol	–0.40	0.39	–0.47	–1.10–.56
20-min poststressor cortisol	–0.24	0.38	–0.36	–.97–.60
45-min poststressor cortisol	–0.40	0.42	–0.46	–1.10–.42
Length of heel stick (min)	5.14	3.40	4.00	01–17
Time of day of heel stick	15:06	3:17	14:43	9:44–20:39

NBAS = Neonatal Behavioral Assessment Scale.