TABLE 4

Population-Attributable Risk Percentage for Pediatric Behavioral Disorders According to SHS Exposure Status at Home in Children Aged 0 to 11 Years (N = 48.4 million) in the United States, 2007

DisordersWeighted Prevalence, % (95% CI)aAdjusted OR (95% CI)bPopulation-Attributable Risk, % (95% CI)cTotal Cases, MillionsdExcess Cases (95% CI)
Learning disabilities8.2 (7.5–8.8)1.54 (1.27–1.85)3.2 (1.6–4.9)3.9124 800 (62 400–191 100)
ADHD or ADD5.9 (5.5–6.4)1.44 (1.21–1.72)2.6 (1.3–4.2)2.872 800 (36 400–117 600)
Conductor behavioral disorders3.6 (3.1–4.0)1.78 (1.44–2.21)4.5 (2.5–6.8)1.776 500 (42 500–115 600)
Total274 100 (141 300–424 300)
  • a Adjusted for clustering effect of state-wide variations.

  • b Adjusted by multivariable logistic regression for age of child, gender, poverty status of the household, state of residence, metropolitan status, mothers' level of education, mothers' foreign status, race, family structure, marital status, total number of children in households, total number of adults in households, primary language, and birth weight.

  • c Population-attributable risk percentage = (Pexp [RR − 1]/Pexp [RR − 1] + 1) × 100, where Pexp = 6.04% (SE: 0.22).

  • d Population-weighted estimates from the 2007 National Survey of Children's Health (0–11 years of age).