Table 4 Floor dust lead levels by renovation status at each visit
From: The contribution of housing renovation to children’s blood lead levels: a cohort study
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) |