Table 2.
Blood lead concentration, environmental lead level (95% CI) and renovation activities at six month intervals during early childhood
| |
Participant age |
|||
|---|---|---|---|---|
| 6 months | 12 months | 18 months | 24 months | |
| Blood lead (μg/dL) * |
2.9 (2.7, 3.1) |
5.7 (5.3, 6.2) |
6.1 (5.6, 6.6) |
7.5 (7.0, 8.2) |
| Blood lead ≥10μg/dL |
1.4% |
16.9% |
22.7% |
33.3% |
| Blood lead ≥5μg/dL |
15.6% |
63.8% |
65.6% |
74.8% |
| Floor dust lead (μg/ft2) |
12.6 (10.9-14.3) |
7.6 (6.5-8.7) |
7.8 (6.5-9.0) |
8.4 (7.0-9.7) |
| Sill dust lead (μg/ft2) |
2,422 (873–3,971) |
936 (427–1,444) |
633 (405–861) |
733 (294–1,172) |
| Trough dust lead (μg/ft2) |
70,662 (58,581-82,743) |
14,477 (11,002-17,952) |
13,356 (10,425-16,287) |
14,473 (10,752-18,194) |
| Soil lead (μg/g) |
1,712 (1,470-1,954) |
1,536 (1,295-1,777) |
1,583 (1,340-1,826) |
1,635 (1,379-1,890) |
| Paint lead (mg/cm2) |
5.0 (4.2-5.7) |
4.9 (4.1-5.8) |
4.9 (4.1-5.8) |
5.3 (4.3-6.2) |
| Any interior renovation, N (%) |
60 (22.5) |
62 (23.6) |
62 (24.5) |
27 (10.8) |
| Interior, sanding or scraping |
43 (15.9) |
39 (14.8) |
42 (16.6) |
15 (6.0) |
| Window replacement |
18 (6.7) |
17 (6.5) |
13 (5.1) |
14 (5.6) |
| Wall or ceiling replacement |
18 (6.7) |
24 (9.1) |
26 (10.2) |
12 (4.8) |
| Any exterior renovation | 61 (26.6) | 71 (28.0) | 25 (10.4) | 25 (10.6) |
* All lead values presented are geometric means with 95% Confidence Intervals.