TABLE 1.
Demographic information, type of facemasks used, and exemption from wearing facemasks in total study population of people with primary ciliary dyskinesia (n = 282) and divided in adults (aged 18 years or older) and children (aged 17 years or younger). COVID-19 and Primary Ciliary Dyskinesia Study, Switzerland, 2020-2021.
| Total N = 282 | Adults (≥18 years) N = 210 | Children (<18 years) N = 72 | |
|---|---|---|---|
| Age, median (IQR) | 32 (17–38) | 40 (29–51) | 11 (7–14) |
| Sex, female | 179 (63) | 145 (69) | 34 (47) |
| Country of residence | |||
| United Kingdom | 62 (22) | 51 (24) | 11 (15) |
| Germany | 57 (20) | 30 (14) | 27 (38) |
| United States | 45 (16) | 31 (15) | 14 (19) |
| Switzerland | 21 (7) | 16 (8) | 5 (7) |
| Australia | 12 (4) | 9 (4) | 3 (4) |
| Italy | 9 (3) | 6 (3) | 3 (4) |
| Other European countries | 58 (21) | 51 (24) | 7 (10) |
| Other non-European countries | 18 (6) | 16 (8) | 2 (3) |
| Type of facemasks used (multiple ticks possible) | |||
| Single-use mask certified (surgical mask) | 128 (45) | 93 (44) | 35 (49) |
| Single-use mask non-certified | 56 (20) | 42 (20) | 14 (19) |
| Filtering face piece (FFP or FFP2/FFP3) | 57 (20) | 46 (22) | 11 (15) |
| Fabric mask with exchangeable filters | 64 (23) | 44 (21) | 20 (28) |
| Fabric mask without exchangeable filters | 136 (48) | 98 (47) | 38 (53) |
| Other (e.g. scarf or other clothes pieces) | 7 (2) | 3 (1) | 4 (6) |
| Exempt from wearing a mask because of PCD (n = 279) | |||
| No | 178 (64) | 124 (60) | 54 (76) |
| Yes, personal exemption prescribed | 2 (1) | 1 (0) | 1 (1) |
| Yes, all people with PCD in my region are exempt | 32 (11) | 25 (12) | 7 (10) |
| Don’t know | 67 (24) | 58 (28) | 9 (13) |
Abbreviations; IQR: inter quartile range.