Table 2.
Distribution of indoor air pollution concentrations in 617 houses in Peru, by site and use of biomass cookstoves
| Lima | Tumbes | Puno City | Puno Rural | All Biomass Users | All Non-biomass Users | |
|---|---|---|---|---|---|---|
| N or Mean (SD) |
N or Mean (SD) |
N or Mean (SD) |
N or Mean (SD) |
N or Mean (SD) |
N or Mean (SD) |
|
| Number of households | 105 | 92 | 166 | 254 | ||
| PM2.5μg/m324-h means | ||||||
| Mean (SD) | 42.8 (12.4) | 37.6 (12.1) | 16.3 (10.3) | 99.6 (102.0) | 92.1 (98.1) | 29.2 (20.5) |
| Geometric mean (GSD) | 41.1 (1.3) | 35.8 (1.4) | 14.1 (1.7) | 58.8 (3.1) | 55.0 (2.9) | 23.7 (2.0) |
| Daily hours > 25 μg/m3 | 20.7 (4.3) | 18.3 (6.2) | 3.6 (3.1) | 5.0 (3.1) | 6.5 (5.8) | 11.6 (9.1) |
|
Spearman correlation: Daily mean vs. hrs. > 25 μg/m3 |
0.87 | 0.82 | 0.91 | 0.59 | 0.47 | 0.95 |
| CO ppm 24-h means | ||||||
| Mean (SD) | 1.3 (0.9) | 0.9 (0.6) | 1.9 (3.2) | 12.1 (17.9) | 10.8 (17.2) | 1.5 (2.4) |
| Geometric mean (GSD) | 1.0 (2.0) | 0.8 (1.6) | 1.2 (2.3) | 4.9 (4.3) | 4.0 (4.4) | 1.0 (2.1) |
| Daily hours > 5.68 ppm | 0.2 (0.5) | 0.3 (0.9) | 1.3 (2.6) | 6.0 (6.7) | 5.4 (6.6) | 0.8 (1.9) |
|
Spearman correlation: Daily mean vs. hrs. > 5.68 ppm |
0.51 | 0.49 | 0.91 | 0.92 | 0.93 | 0.73 |