. Author manuscript; available in PMC: 2018 Oct 27.

Published in final edited form as: Dev Psychobiol. 2016 Jul 30;59(1):26–38. doi: 10.1002/dev.21449

Table 3.

Descriptive Statistics of Environmental Measures

Maternal Factors (N=89)	M(SD)
Maternal Factors (N=89)	sample range

CESD total score	9.87 (7.01)
CESD total score	0-33
Maternal Positive Affect	14.3% (14.5%)
Maternal Positive Affect	1-79%
Maternal Motherese	22.5% (18.6%)
Maternal Motherese	0-56%
Maternal Negative Affect	0% (0%)
Maternal Negative Affect	0-3%
Maternal Intrusiveness	1% (1%)
Maternal Intrusiveness	0-4%
Maternal Total Parenting Stress Score (PSI)	71.56 (11.44)
Maternal Total Parenting Stress Score (PSI)	46.00-105.97

Breastfeeding and Sleep (N=106)	Frequency or M(SD)

Duration of sleep >/= 10 hours/night
(%)	81.7%
Sleep Disruption	.01(.88)
M(SD)	−.75 – 1.35
Breastfed in last 3 months
(%)	72.8%

Note. Descriptive statistics for maternal psychosocial measures are from the longitudinal sample at 6 months. Maternal Total Parenting Stress Score (PSI) is the mean and SD excluding defensive responders. Breastfeeding and sleep descriptive statistics are from the full 12-month sample. Sleep disruption is a standardized aggregate score.