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Table 6 Associations between exposure and behaviour assessed through IBQ (beta coefficients)

From: Neurobehavioural and cognitive effects of prenatal exposure to organochlorine compounds in three year old children

IBQ

12 months

 

N

scale 1

(stress)

scale 2

(smiling and laughter)

scale 3

(distress to limitations)

scale 4

(activity)

scale 5

(duration of orienting)

Sum PCB ng/g lipid

T = 96

−.081

−.164

.014

.047

−0.125

Girls

♀ = 44

NS

NS

NS

NS

NS

Boys

♂ = 52

NS

NS

NS

NS

NS

Calux-TEQ pg/g lipid

T = 68

−.247*

.117

.048

.119

.085

Girls

♀ = 37

NS

NS

NS

NS

0.468**

Boys

♂ = 31

NS

NS

NS

NS

NS

PCB-118 ng/g lipid

T = 95

−.092

.007

−.201*

−.131

−.061

Girls

♀ = 51

NS

NS

NS

NS

NS

Boys

♂ = 44

NS

NS

--0.379*

NS

NS

PCB-170 ng/g lipid

T = 95

.007

.187

−.103

−.054

−.083

Girls

♀ = 51

NS

NS

NS

NS

NS

Boys

♂ = 44

NS

NS

NS

NS

NS

HCB ng/g lipid

T = 93

−.150

.193*

−.022

.045

.182

Girls

♀ = 50

NS

NS

NS

NS

0.343*

Boys

♂ = 43

NS

0.386*

NS

NS

NS

DDE ng/g lipid

T = 100

−.201*

.071

−.147

.103

−.158

Girls

♀ = 54

−0.299*

NS

NS

NS

−0.308*

Boys

♂ = 46

NS

0.347*

NS

NS

NS

Sum PCB*HCB

T = 93

−.079

−.046

−.048

−.034

.031

Girls

♀ = 50

NS

NS

NS

NS

NS

Boys

♂ = 43

NS

NS

NS

NS

NS

Sum PCB*DDE

T = 96

.026

.078

.054

.159

.078

Girls

♀ = 52

NS

NS

NS

NS

NS

Boys

♂ = 44

NS

0.376*

NS

NS

NS

  1. IBQ and IBQ scales: see overview tests in Table 1
  2. PCBs, Calux-TEQ, DDE, HCB: see blood sampling and measurements
  3. Su PCB*HCB, sum PCB*DDE: see statistical analysis
  4. * = 0.050 ≤ p < 0.10, ** = 0.010 ≤ p < 0.050, *** = 0.001 ≤ p < 0.010