TABLE 4

Prevalence Ratio of Scoring Below the PALS-K Fall Benchmark (95% CI) by BLL Categories

Group Size, nModel 1Model 2Model 3Model 4Model 5
Below Fall BMAbove Fall BM
GM BLL categories11932213
 0–4 µg/dL66814231.00 (Reference)1.00 (Reference)1.00 (Reference)1.00 (Reference)1.00 (Reference)
 5–9 µg/dL4156831.18 (1.16–1.21)1.20 (1.18–1.22)1.23 (1.21–1.25)1.22 (1.20–1.25)1.21 (1.19–1.23)
 ≥10 µg/dL1101071.58 (1.54–1.63)1.62 (1.57–1.66)1.66 (1.62–1.71)1.61 (1.56–1.65)1.56 (1.51–1.60)
Log GM BLL doubling model, per twofold increase119322131.18 (1.17–1.19)1.19 (1.18–1.20)1.20 (1.19–1.21)1.19 (1.18–1.21)1.17 (1.16–1.19)
P<.001<.001<.001<.001<.001
  • N = 3406. Model 1 was unadjusted; model 2 was adjusted for age at start of kindergarten, gender, and year; model 3 was additionally adjusted for race; model 4 was additionally adjusted for child language; model 5 was additionally adjusted for free/reduced lunch status. All values were significant at P = .001. BM, benchmark.