|
Blood-lead concentrations range (μg/L)
|
IQ point loss assumptionsa, b, c
|
Number of childrend
|
Number of IQ point losses
|
Total Costs (€billion)e
|
Lost life time earnings with a discount factor w30(€billion)
|
|---|
|
B-Pb < 15
|
0
|
2,348,091
|
0
|
0
|
0
|
|
15 ≤ B-Pb < 24
|
1
|
1,648,975
|
1,648,975
|
28.6
|
11.8
|
|
24 ≤ B-Pb < 100
|
4.9 (1+3.9)
|
693,783
|
1,421,769
|
24.7
|
10.2
|
|
B-Pb ≥ 100
|
6.8 (1+3.9+1.9)
|
5,333
|
36,265
|
0.6
|
0.3
|
|
TOTAL
| |
4,696,182
|
3,107,009
|
53.9
|
22.3
|
- Based on a EFSA conclusions [1], b CEPA [24], c Lanphear and colleagues. [14], d InVS data [11] and e Gould [8]
- Table 2 presents lifetime earning losses per year of the selected cohort according to IQ point losses within B-Pb concentration ranges. The IQ point loss assumptions were 1, 4.9 (= 1+3.9) with 0.51 point per 10 μg/L within this range, and 6.8 (= 1+3.9 +1.9) IQ point losses per 100 μg/L within this range, from 15 to 24 μg/L, from 24 to 100 μg/L, and above 100 μg/L respectively. The loss per IQ point was estimated to be €200817, 363. Based on the equation 3 (Bearn = Bearn15-24 + Bearn24-100 + Bearn≥100), the total lost lifetime earnings due to lead toxicity Bearn were estimated, with Bearn15-24 for increased B-Pb <24 μg/L, Bearn24-100 for B-Pb between 24 μg/L and 100 μg/L, and Bearn≥100 for B-Pb ≥100 μg/L. We applied a discount factor w30 on the total costs and we obtained € 22.3 billion, € 10.5 billion and € 0.3 billion, respectively for the year 2008.
