Table 4.
Floor dust lead levels by renovation status at each visit
| Renovation |
visit 1 |
visit 2 |
visit 3 |
visit 4 |
||||
|---|---|---|---|---|---|---|---|---|
| Mean (95% CI) | N (%) > 5 μg/ft2 | Mean (95% CI) | N (%) > 5 μg/ft2 | Mean (95% CI) | N (%) > 5 μg/ft2 | Mean (95% CI) | N (%) > 5 μg/ft2 | |
|
None |
7.3 (6.3,8.3) |
117 (60.6) |
4.7 (4.2,5.4) |
83 (43.5) |
4.6 (4.0,5.2) |
81 (43.6) |
4.5 (3.9,5.2) |
109 (50.5) |
|
Yes |
6.6 (5.5,7.9) |
28 (49.1) |
4.3 (3.7,5.1) |
19 (31.2) |
4.2 (3.5,4.9) |
21 (33.9) |
4.1 (3.3,5.0) |
10 (38.5) |
|
Renovation timing |
|
|
|
|
|
|
|
|
|
None |
7.2 (6.3,8.3) |
117 (60.6) |
4.7 (4.2,5.4) |
83 (43.5) |
4.6 (4.0,5.2) |
81 (43.6) |
4.5 (3.9,5.2) |
109 (50.5) |
|
>1 month prior |
6.2 (5.0,7.6) |
14 (41.2) |
4.0 (3.4,4.8) |
15 (37.5) |
3.9 (3.2,4.7) |
11 (26.2) |
3.8 (3.1,4.8) |
6 (31.6) |
| <1 month prior | 7.4 (5.9,9.3) | 14 (60.9) | 4.9 (3.9,6.1) | 4 (19.1) | 4.7 (3.7,5.9) | 10 (60.0) | 4.6 (3.6,6.0) | 4 (57.1) |