Table 1.

Comparison of participant characteristics across cortisol trajectories.

	Trajectory 1	Trajectory 2
	M (SD)	M (SD)	t or χ2, d
Child Factors
Age	12.48 (7.47)	15.51 (8.81)	−.99
Externalizing problems	13.97 (8.84)	11.21 (8.31)	1.23
Internalizing problems	12.46 (8.27)	8.56 (5.42)	2.31*, d =.57
Diagnostic group	89% ASD	11% ASD	10.73***, d=.78
	53% IDD	47% IDD
Maternal Factors
PSI Childrearing Stress	50.17 (10.57)	47.69 (11.11)	1.10
PSI Personal Stress	44.98 (11.40)	36.18 (12.36)	3.08***, d = .74
# Stressors last year	1.76 (1.35)	2.11 (1.98)	−.89
Beck Depression	12.85 (9.39)	10.64 (8.15)	1.00
Beck Anxiety	6.61 (5.52)	6.44 (7.57)	.11
Mindfulness	53.40 (10.55)	59.66 (12.13)	−2.31*, d =.55
Health Self-Perception	2.17 (.78)	1.78 (.60)	2.35*, d =.57
# Health Problems	2.13 (1.74)	2.33 (1.64)	−.42
Body Mass Index	26.54 (5.95)	27.22 (3.77)	−.49
Demographics
Maternal Age	43.85 (7.74)	45.38 (7.66)	−.88
Median Income	50–70K	50–70K	1.98
Maternal Education	2–4 yrs college	2–4yrs college	.05
# Hours mother works	26.54 (5.95)	27.22 (3.77)	−.49
Married	76%	85%	2.06*, d =.34

Note:

^*p < .05;

^**p < .01;

^***p < .001.

Effect sizes are shown only for results significant at p<.05 or better.