Table 1.
Descriptive statistics of 30 cases included in the study.
| Variable | N (%) | Mean | SD | Minimum | Median | Maximum | IQR |
|---|---|---|---|---|---|---|---|
| Age (years) | 30 | 66.5 | 18.23 | 25 | 68 | 93 | 26.5 |
| Male | 17 (57) | — | — | — | — | — | — |
| Smoker | 12 (40) | — | — | — | — | — | — |
| Time living in São Paulo (years) | 30 | 46.9 | 16.2 | 0.3 | 48 | 69 | 18.8 |
| Daily commuting (hours) | 30 | 2.1 | 2.7 | 0 | 0.7 | 10 | 3.3 |
| Smoking pack-years | 29 | 11.15 | 18.96 | 0 | 0 | 60 | 22.8 |
| Anthracosis index | 25 | 0.19 | 0.137 | 0.002 | 0.176 | 0.548 | 0.196 |
| Socioeconomic index | 27 | −0.18 | 0.39 | −0.79 | −0.29 | 0.81 | 0.51 |
SD: Standard Deviation; y: years; pack-years: number of cigarettes smoked per day/20) X (years as a smoker).