Association of pyrethroid pesticide exposure with attention-deficit/hyperactivity disorder in a nationally representative sample of U.S. children

Table 1 Comparison of characteristics for participants age 8-15 years not included and included in sample

	Not Included			Included
Characteristic	N with Characteristic^a	%^a	Overall N^a	N with Characteristic^a	%^a	Overall N^a
Age 8-11 years	490	46.8	1341	307	46.5	687
Male gender	661	51.3	1341	323	52.9	687
Race/ethnicity
African American	451	15.4	1341	210	13.0	687
Mexican American	386	11.0	1341	205	11.1	687
Other race/ethnicity	111	14.2	1341	56	12.5	687
White, non-Hispanic	393	59.4	1341	216	63.4	687
Caregiver report of ADHD	96	9.7	1139	66	10.8	684
DSM-IV Defined ADHD	75	9.9	966	55	9.6	667
ADHD by DSM-IV Criteria and/or Caregiver report	137	17.8	980	93	14.6	687
Poverty-Income Ratio
<1.00	370	20.9	1260	203	20.7	664
1.00-1.85	318	22.7	1260	155	20.2	664
>1.85-3.00	231	20.0	1260	125	22.0	664
>3.00	341	36.4	1260	181	37.1	664
Reported health insurance	1109	88.0	1325	564	83.6	681
Reported prenatal tobacco exposure	203	17.2	1325	92	18.1	677
Birth weight <2.5 kg	130	8.2	1322	50	5.9	682
Reported current household tobacco smoke exposure	298	23.2	1326	145	22.7	683
Urinary 3-PBA < LOD	29	23.2	148	131	21.2	687

Abbreviations: ADHD, Attention-Deficit/Hyperactivity Disorder; DSM-IV, Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition; SE, standard error; LOD, limit of detection; 3-PBA, 3-phenoxybenzoic acid
^aN reflects actual sample size, % is weighted to reflect national prevalence estimates

ISSN: 1476-069X