Skip to main content
. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Stress. 2018 Dec 26;22(1):60–69. doi: 10.1080/10253890.2018.1504917

Table 2:

Pearson correlation coefficients (r), and mean differences (∂) and standard deviations (SD) of log-transformed hair cortisol concentrations from preconception to the 3rd trimester (N=97 participants).

Hair sample #1 Hair sample #2

Preconception (3–6cm) 1st Trimester(3cm) 2nd Trimester(3–6cm) 3rd Trimester(3cm)
Hair sample #1 Preconception (3–6cm) r 1.00 0.83 ** 0.23 * 0.15
∂ (SD) REF 0.35 (0.57)*** 0.47 (1.17)** 0.94 (1.23)***

1st Trimester (3cm) r 1.00 0.19 0.08
∂ (SD) REF 0.11 (1.18) 0.58 (1.25) ***

Hair sample #2 2nd Trimester (3–6cm) r 1.00 0.75 ***
∂ (SD) REF 0.47 (0.63) ***

3rd Trimester (3cm) r 1.00
∂ (SD) -
***

=p-values <0.0001

**

=p-values <0.01

*

=p-values <0.05