Symptoms during the past month and carbon monoxide in exhaled breath; cross-sectional analyses between plancha and open fire groups at follow-up
| 6 months | 12 months | 18 months | |
|---|---|---|---|
| n (%) | n (%) | n (%) | |
| Significant difference between intervention and control groups: *p = 0.0005, †p = 0.005. | |||
| §Median of mean carbon monoxide values from two best readings of three blows. The Mann-Whitney U test was used for testing the significance of differences. | |||
| Women, n | 470 (100) | 456 (100) | 180 (100) |
| Plancha | 236 (50.2) | 227 (49.8) | 89 (49.4) |
| Open fire | 234 (49.8) | 229 (50.2) | 91 (50.6) |
| Sore eyes in past month,n (%) | |||
| Plancha | 48 (20.3*) | 19 (8.4*) | 7 (7.9*) |
| Open fire | 92 (39.3) | 79 (34.5) | 31 (34.1) |
| Headache in past month,n (%) | |||
| Plancha | 108 (45.8) | 86 (37.9) | 24 (27.0†) |
| Open fire | 121 (51.7) | 103 (45.0) | 43 (47.3) |
| Back pain in past month,n (%) | |||
| Plancha | 74 (31.4) | 51 (22.5) | 16 (18.0) |
| Open fire | 74 (31.6) | 56 (24.5) | 23 (25.3) |
| Median CO§ in exhaled breath (ppm) | |||
| Plancha | 5.0* | 5.0* | 5.0* |
| Open fire | 7.0 | 7.0 | 7.0 |