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. 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 5.

Stepwise Regression Models Predicting Infant Cortisol from Breastfeeding and Sleep

Infant Hair Cortisola
Variable B SE β p Model
Adjusted R2
12 mo. sleep duration −.620 .271 −.230 .026 .043
Infant Slopeb
Variable B SE β p Model
Adjusted R2
12 mo. sleep duration 1.210 .286 .468 .000 .207

Note.

a

sleep duration and breastfeeding were both entered into the stepwise regression; breastfeeding did not remain in the model.

b

sleep duration, sleep disruption, and SES were entered into a stepwise regression; SES and sleep disruption did not remain in the model.