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Table 4 Multiple hierarchical analyses predicting infant T2 DREAMHAIR−BABY hair GCs (n = 162)

From: Infant development at 14 months in the context of maternal objective and subjective birth experience and infant hair glucocorticoids

  

T2 HairF a

 

T2 HairE b

 

T2 HairF/HairE ratio c

Predictor

 

β

p

[95% Bca CI]

adj. R2

 

β

p

[95% Bca CI]

adj. R2

 

β

p

[95% Bca CI]

adj. R2.

Model 1

    

0.18

    

0.24

    

0.24

T1 DREAMHAIR−BABY hair GCs d

 

0.39

< 0.001**

[0.00, 0.00]

  

0.40

< 0.001**

[0.39, 0.88]

  

0.39

< 0.001**

[0.07, 0.16]

 

Parity e

 

− 0.05

0.369

[-0.11, 0.04]

  

–

–

–

  

–

–

–

 

Gestational age f

 

0.09

0.203

[-0.01, 0.06]

  

0.07

0.355

[-0.03, 0.08]

  

–

–

–

 

Natural hair color g

 

–

–

–

  

− 0.14

0.058

[-0.20, -0.00]

  

0.15

0.038*

[0.10, 0.24]

 

Hair washing frequency g

 

–

–

–

  

− 0.20

0.005*

[-0.15, -0.03]

  

0.24

. <001**

[0.05, 0.19]

 

Model 2

    

0.19

    

0.30

    

0.32

T1 DREAMHAIR−BABY hair GCs d

 

0.37

<0.001**

[0.00, 0.00]

  

0.43

< 0.001**

[0.42, 0.93]

  

0.36

< 001**

[0.07, 0.15]

 

Parity e

 

− 0.03

0.566

[-0.10, 0.06]

  

–

–

–

  

–

–

–

 

Gestational age f

 

0.09

0.179

[-0.01, 0.06]

  

0.08

0.260

[-0.02, 0.08]

  

–

–

–

 

Natural hair color g

 

–

–

–

  

− 0.14

0.042*

[-0.19, -0.01]

  

0.15

0.025*

[0.02, 0.23]

 

Hair washing frequency g

 

–

–

–

  

− 0.19

0.009*

[-0.14, -0.03]

  

0.23

0.002**

[0.05, 0.19]

 

Index objective birth experience f

 

0.12

0.108

[-0.01, 0.06]

  

− 0.26

< 0.001**

[-0.11, -0.03]

  

0.29

< 0.001**

[0.05, 0.15]

 

Model 3

    

0.20

    

0.30

    

0.31

T1 DREAMHAIR−BABY hair GCs d

 

0.36

< 0.001**

[0.00, 0.00]

  

0.42

< 0.001**

[0.41, 0.92]

  

0.36

< 0.001**

[0.06, 0.15]

 

Parity e

 

− 0.02

0.821

[-0.09, 0.08]

  

–

–

–

  

–

–

–

 

Gestational age f

 

0.09

0.161

[-0.01, 0.06]

  

0.08

0.232

[-0.02, 0.08]

  

–

–

–

 

Natural hair color g

 

–

–

–

  

− 0.14

0.045*

[-0.19, -0.01]

  

0.15

0.023*

[0.02, 0.23]

 

Hair washing frequency g

 

–

–

–

  

− 0.20

0.006*

[-0.14, -0.03]

  

0.23

. 001**

[0.04, 0.18]

 

Index objective birth experience f

 

0.08

0.296

[-0.02, 0.05]

  

− 0.27

< 0.001**

[-0.12, -0.04]

  

0.28

< 0.001**

[0.04, 0.14]

 

Subjective birth experience (SIL) f

 

− 0.14

0.082

[0.00, 0.00]

  

− 0.07

0.386

[-0.00,0.00]

  

− 0.03

0.680

[00.0, 0.00]

 
  1. Note. Β = Standardized beta coefficient. Bca CI = 95% bias corrected and accelerated bootstrap confidence interval (2,000 iterations), adj. R2. = Adjusted coefficient of
  2. determination. SIL = Salmon’s Item List; HairF = hair cortisol concentrations; HairE = hair cortisone concentrations
  3. a Model 1: F(3, 154) = 12.24, p <.001; Model 2: ΔF(1,153) = 2.60, p =.109, ΔR2 = 0.01; Model 3: ΔF(1,152) = 3.23, p =.074, ΔR2 = 0.02
  4. b Model 1: F(4, 135) = 11.98, p <.001; Model 2: ΔF(1,134) = 12.65, p <.001, ΔR2 = 0.06; Model 3: ΔF(1,133) = 0.73, p =.396, ΔR2 = 0.00
  5. c Model 1: F(3, 136) = 15.51, p <.001; Model 2: ΔF(1,135) = 16.72, p <.001, ΔR2 = 0.08; Model 3: ΔF(1,134) = 0.181, p =.672, ΔR2 = 0.00
  6. d Assessed at T1 DREAMHAIR−BABY (M = 10.30 days after birth, SD = 4.08). e Assessed at T1 DREAM (M = 26.78 pregnancy week, SD = 5.63). f Assessed at T2 DREAM (M = 8.29 weeks after birth date, SD = 1.47). g T2 DREAMHAIR (M = 8.38 weeks after birth date, SD = 1.20)
  7. * p <.05 but did not survive Dunn-Sidàk correction (p >.003)
  8. ** p <.001
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BMC Pediatrics

ISSN: 1471-2431

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