Table. Summary Characteristics of the Study Population: Visits and Patients.
| Characteristic | No. (%) | |||
|---|---|---|---|---|
| Totala | 2015-2016 (Control)b | 2016-2017 (Control)b | 2018-2019 (Wildfire period)b | |
| Adult AD appointments, No. | 5529 | 1477 | 1790 | 2262 |
| Aged ≥65 y | 1238 (22.4) | 399 (27.0) | 372 (20.8) | 467 (20.6) |
| Aged 18-64 y | 4291 (77.6) | 1078 (73.0) | 1418 (79.2) | 1795 (79.4) |
| Adult itch appointments, No. | 1319 | 460 | 422 | 437 |
| Aged ≥65 y | 614 (46.6) | 275 (59.8) | 163 (38.6) | 176 (40.3) |
| Aged 18-64 y | 705 (53.4) | 185 (40.2) | 259 (61.4) | 261 (59.7) |
| Total adult dermatology clinic appointments, No. | 56 575 | 17 037 | 18 421 | 21 117 |
| Unique adult patients, No. | 3448 | 905 | 1073 | 1470 |
| Aged ≥65 y | 1008 (29.2) | 316 (35.0) | 299 (27.9) | 400 (27.2) |
| Aged 18-64 y | 2440 (70.8) | 589 (65.1) | 774 (72.1) | 1070 (72.8) |
| Age of all patients, mean (SD), y | 44.6 (21.1) | 44.8 (21.5) | 44.3 (20.3) | 44.5 (21.3) |
| Aged ≥65 y | 76.7 (7.7) | 76.3 (7.8) | 76.8 (7.3) | 76.7 (8.0) |
| Aged 18-64 y | 42.4 (12.3) | 42.6 (12.7) | 42.5 (12.1) | 42.3 (12.1) |
| Female patients | 2325 (67.4) | 649 (59) | 715 (55) | 961 (55) |
| Aged ≥65 y | 623 (26.8) | 166 (25.6) | 195 (27.3) | 261 (27.2) |
| Aged 18-64 y | 1702 (73.2) | 483 (74.4) | 520 (72.7) | 700 (72.8) |
Abbreviation: AD, atopic dermatitis.
a
Percentages represent the fraction of data within the combined data from all 3 time periods.
b
Percentages represent the fraction of data within the respective time period (eg, 2015-2016, 2016-2017, or 2018-2019), not the combined data.