Journal of Environmental and Public Health / 2016 / Article / Tab 1 / Research Article
Cross-Sectional Study of Polybrominated Flame Retardants and Self-Reported Attention Deficit Hyperactivity Disorder in US Youth Aged 12–15 (NHANES 2003-2004) Table 1 Percentage of sociodemographic and environmental factors and ADHD diagnosis for youth 12–15 years old.
All youth 12–15 years old Those who had the blood analyzed for PBDEs Those who did not have their blood analyzed for PBDEs Chi-square value Age (years) 1.09 (0.30) 12-13 582 (51.47) 202 (53.24) 373 (50.63) 14-15 549 (48.53) 179 (46.76) 377 (49.38) Missing 0 0 0 Sex 2.70 (0.10) Male 582 (51.26) 183 (47.35) 399 (53.44) Female 549 (48.74) 198 (52.65) 351 (46.56) Missing 0 0 0 Race 2.57 (0.46) Mexican American 350 (31.75) 127 (34.12) 223 (30.63) Other, including other Hispanic and multiracial 76 (7.08) 23 (5.88) 53 (7.50) Non-Hispanic white 292 (25.08) 90 (23.82) 202 (26.09) Non-Hispanic black 413 (36.10) 141 (36.17) 272 (35.78) Missing 0 0 0 PIR 1.21 (0.27) 0–0.99 332 (32.15) 120 (34.44) 212 (30.93) ≥1 746 (67.85) 244 (65.56) 502 (69.07) Missing 53 17 36 Prenatal ETS 0.22 (0.64) Yes 191 (16.84) 67 (17.65) 124 (16.41) No 927 (83.16) 309 (82.35) 618 (83.59) Missing 13 5 8 Current ETS 0.01 (0.94) Yes 253 (22.55) 86 (23.53) 167 (22.03) No 863 (77.45) 291 (76.47) 572 (77.97) Missing 15 4 11 Covered by health insurance 0.04 (0.84) Yes 954 (85.44) 322 (85.29) 632 (85.47) No 159 (14.56) 55 (14.71) 104 (14.53) Missing 18 4 14 Birthweight 0.26 (0.61) ≥2,500 g 1,000 (88.57) 334 (87.94) 666 (88.91) <2,500 g 129 (11.43) 46 (12.06) 83 (14.53) Missing 2 1 1 Attended preschool/daycare 2.40 (0.12) Yes 775 (69.29) 249(66.47) 526 (70.78) No 353 (30.71) 130 (33.53) 223 (29.22) Missing 3 2 1 Body Mass Index (BMI) 2.01 (0.37) Underweight/normal 676 (61.33) 244 (64.12) 432 (59.84) Overweight 250 (23.16) 80 (21.18) 170 (24.22) Obese 170 (15.51) 54 (14.71) 116 (15.94) Missing 35 3 32 Blood lead quartiles 3.41 (0.33) 1st quartile 418 (41.22) 156 (44.71) 262 (39.38) 2nd quartile 309 (30.51) 106 (30.00) 203 (30.78) 3rd quartile 180 (17.86) 57 (16.47) 123 (18.59) 4th quartile 16 (10.41) 31 (8.82) 75 (11.25) Missing 0 31 87 ADHD diagnosis 0.43 (0.51) Yes 113 (9.22) 35 (7.55) 78 (10.11) No 1,016 (90.77) 346 (92.45) 670 (89.89) Missing 2 0 2
