. Author manuscript; available in PMC: 2007 May 1.

Published in final edited form as: Neurotoxicol Teratol. 2006 May 2;28(3):363–375. doi: 10.1016/j.ntt.2006.02.004

Table 5.

Test score change in percent of test score standard deviation associated with doubling in exposure, as indicated by multiple regression analysis with adjustment for covariates.^a

	Cord blood			Maternal hair			Cord tissue
Test	N	Change	P	N	Change	P	N	Change	P
NES2 Finger Tapping
Preferred hand	758	−4.18	0.16	776	−6.01	0.052	379	−5.43	0.19
non-preferred hand	758	−4.15	0.16	776	−7.15	0.020	380	−5.36	0.23
both hands	757	−6.41	0.033	775	−7.22	0.022	379	−6.42	0.17
CATSYS
mean tapping maximum	759	−1.59	0.61	777	−0.21	0.95	380	−8.35	0.08 7
supination-pronation	758	−2.83	0.36	776	−1.91	0.56	380	−2.16	0.66
mean reaction time (ms)^b	758	3.96	0.19	776	5.97	0.062	379	4.89	0.29
NES2 Continuous Performance Test
average reaction time (ms) ^b	761	7.44	0.018	779	6.30	0.055	381	2.35	0.63
number of false positives ^b	761	−0.97	0.75	779	−1.18	0.71	381	−5.98	0.20
number of false negatives ^b	761	0.72	0.82	779	−1.95	0.55	381	−6.66	0.16
Digit Spans	761	0.22	0.94	779	−0.96	0.76	381	0.35	0.94
Spatial Span	761	7.25	0.019	779	7.51	0.021	381	4.48	0.37
Stanford-Binet Copying
total copying score	757	−2.99	0.33	775	−4.12	0.20	378	−0.62	0.90
sum of most difficult 5	757	−5.89	0.056	775	−6.19	0.055	378	−5.09	0.28
recall number correct	755	0.62	0.84	773	3.04	0.35	378	−3.36	0.48
Block Design, WISC-R	761	3.65	0.22	779	2.96	0.38	381	6.94	0.15
Block Design, WISC+WAIS	276	3.46	0.48	283	6.29	0.24	214	9.76	0.11
Children’s Category Test ^b	761	0.49	0.87	779	1.98	0.53	381	−0.70	0.88
Similarities	761	−0.38	0.90	779	2.01	0.52	381	1.76	0.69
Boston Naming Test
correct without cue	761	−4.79	0.11	779	−3.39	0.28	381	−6.71	0.14
total correct w/cues	761	−5.90	0.048	779	−4.21	0.18	381	−9.75	0.03 6
California Verbal Learning Test
learning, total correct, 5 trials	761	−2.84	0.34	779	0.61	0.84	381	−9.01	0.04 4
short delay, free recall	761	1.45	0.63	779	4.79	0.13	381	−4.33	0.35
long delay, free recall	760	−0.42	0.89	778	2.42	0.45	380	−7.43	0.11
long delay, recognition	759	−2.94	0.35	777	0.08	0.98	379	−6.01	0.19

Age, sex, maternal Raven score, residence in town/village, school grade, maternal and paternal employment, time of day, language, and computer experience (for computer tests only).

An increase in the test parameter denotes a deficit.