Table 2.
Distribution of daily outpatient visits for psoriasis, fine particulate matter (PM2.5) concentrations, and meteorological conditions.
| Variable | Mean ±SD | Minimum | Percentile | Maximum | IQR | ||
|---|---|---|---|---|---|---|---|
| 25th | 50th | 75th | |||||
| Daily outpatient visits | 171 ± 208 | 7 | 58 | 100 | 256 | 1,413 | 198 |
| PM2.5 (μg/m3) | 86.8 ± 74.3 | 1.0 | 33.3 | 66.5 | 115.0 | 537.3 | 81.7 |
| Daily outpatient visits during the cool season | 165 ± 213 | 7 | 71 | 87 | 242 | 1,413 | 171 |
| Daily outpatient visits during the warm season | 180 ± 201 | 8 | 42 | 122 | 274 | 1,139 | 232 |
| Temperature (°C) | 14.6 ± 11.3 | −14.3 | 2.6 | 15.1 | 24.0 | 34.5 | 21.4 |
| Relative humidity (%) | 51.8 ± 20.2 | 8.0 | 35.1 | 52.0 | 68.1 | 88.0 | 33.0 |
IQR, interquartile range; SD, standard deviation.