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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Neurotoxicol Teratol. 2012 Jul 2;34(5):513–521. doi: 10.1016/j.ntt.2012.06.004

Table 4.

Chronic Hg dose-response effects among boys with CPOX WT or CPOX4 variant in Year 7

Behavioral
Test
N Cumulative Hg Maximum Hg
WT HET OR
MUT
WT HET OR
MUT
Beta
(SE)
rpart
(p)
Beta
(SE)
rpart
(p)
Beta
(SE)
rpart
(p)
Beta
(SE)
rpart
(p)
ATTENTION
Stroop Test - Color 121 −1.14
(2.32)
−.06
(.63)
−12.55
(4.05)
−.47
(.004)
.73
(2.24)
.04
(.74)
−11.17
(3.80)
−.45
(.006)
      Word 121 −2.90
(3.20)
−.10
(.37)
−18.06
(4.89)
−.54
(.001)
−.77
(3.10)
−.03
(.80)
−17.10
(4.51)
−.54
(.001)
WAIS-III - Digit Span 121 .11
(.77)
.02
(.88)
−3.57
(1.12)
−.48
(.003)
.87
(.74)
.13
(.24)
− 3.90
(.98)
−.57
(.0001)
WMS-III - Spatial Span 121 .17
(.62)
.03
(.79)
−2.45
(.97)
−.40
(.02)
.57
(.60)
.11
(.35)
−2.89
(.85)
−.50
(.002)
Adult Trails A - Time
(Sec)
120 −.80
(2.07)
−.04
(.70)
11.25
(3.83)
.45
(.006)
−2.37
(1.98)
−.14
(.24)
13.04
(3.30)
.56
(.0001)
VISUAL-SPATIAL
SRT Mean 121 .00
(.03)
.01
(.96)
.15
(.05)
.44
(.007)
.01
(.03)
.02
(.86)
.14
(.05)
.46
(.005)
WAIS-III - Digit Symbol 120 −2.46
(3.33)
−.08
(.46)
−20.70
(6.08)
−.50
(.002)
−.32
(3.32)
−.01
(.92)
−18.17
(5.75)
−.48
(.003)
EXECUTIVE FUNCTION
Adult Trails B 120 --- --- --- --- 1.98
(6.08)
.04
(.75)
22.26
(7.03)
.48
(.003)
LEARNING & MEMORY
RAVALT TR5 - List A 121 --- --- --- --- .51
(.43)
.13
(.24)
−1.78
(.80)
−.36
(.03)
      TR7 - A/ post
      B
120 --- --- --- --- .52
(.52)
.11
(.33)
−2.24
(.82)
−.42
(.01)
      TR8 - List A
      20'
120 .32
(.60)
.06
(.60)
−2.01
(.92)
−.35
(.04)
.84
(.58)
.16
(.15)
−2.14
(.83)
−.40
(.01)
MOTOR
WRAVMA – Pegs
Dominant
121 --- --- --- --- −.55
(1.58)
−.04
(.73)
−7.16
(2.90)
−.39
(.02)
      Non
      Dom
121 .41
(1.49)
.03
(.27)
−5.87
(2.92)
−.33
(.05)
.79
(1.44)
.06
(.58)
−5.34
(2.72)
−.32
(.06)
Finger Tapping -
Dominant
119 1.59
(1.22)
.15
(.20)
−4.03
(1.76)
−.37
(.03)
2.59
(1.15)
.25
(.03)
−3.46
(1.65)
−.34
(.04)
      Non-
      Dom
119 1.07
(1.27)
.10
(.40)
−7.24
(1.67)
−.60
(.0001)
2.14
(1.21)
.20
(.08)
−5.83
(1.66)
−.52
(.001)

Values in bold signify p ≤ 0.05 in the direction of impaired performance. Highlighted value signifies p ≤ 0.05 in the direction of improved performance.