Participant characteristics
| Asthma n=7975 (% (n)) | Chronic respiratory disease (non-asthma) n=1541 (% (n)) | |
| Age group (years) | ||
| 17 and under | 5.54 (439) | 0.33 (5) |
| 18–29 | 12.11 (959) | 0.59 (9) |
| 30–39 | 24.68 (1955) | 1.90 (29) |
| 40–49 | 30.60 (2424) | 8.93 (136) |
| 50–59 | 18.67 (1479) | 21.47 (327) |
| 60–69 | 6.26 (496) | 37.82 (576) |
| 70–79 | 1.94 (154) | 25.21 (384) |
| 80 and above | 0.19 (15) | 3.74 (57) |
| Gender (% female) | 82.92 (6562) | 74.67 (1141) |
| Country | ||
| England | 75.35 (5981) | 83.33 (1275) |
| Scotland | 13.03 (1034) | 9.54 (146) |
| Wales | 7.19 (571) | 5.23 (80) |
| Northern Ireland | 4.43 (352) | 1.90 (29) |
| Influenza immunisation 2019/2020 | ||
| Yes | 77.10 (6139) | 89.96 (1380) |
| No | 22.54 (1795) | 9.97 (153) |
| Don’t know | 0.35 (28) | 0.07 (1) |
| Current smoking | ||
| Non-smoker | 89.41 (7115) | 86.07 (1322) |
| Smoker | 10.59 (843) | 13.93 (214) |
| Of smokers | ||
| Intending to quit smoking due to COVID-19 | 49.11 (414) | 64.48 (138) |
| Not intending quit smoking due to COVID-19 | 50.89 (429) | 35.51 (76) |
| Shielding | ||
| Actively shielding | 68.66 (5461) | 89.97 (1381) |
| Not actively shielding | 31.34 (2493) | 10.30 (154) |
| Self-isolating | ||
| Currently self-isolating | 67.81 (5403) | 88.01 (1350) |
| Not currently self-isolating | 32.19 (2565) | 11.99 (184) |
| Current COVID-19 symptoms ‘Yes’ | 6.89 (549) | 3.07 (47) |
| Current COVID-19 symptoms ‘Not sure’ | 3.99 (318) | 3.78 (58) |
| Following self-isolation advice due to symptoms | 92.81 (800) | 98.04 (100) |
| Not following self-isolation advice | 7.19 (62) | 1.96 (2) |
| Diagnosis | ||
| Asthma | 83.81 (7975) | |
| COPD | 10.12 (963) | |
| Bronchiectasis | 3.81 (363) | |
| ILD | 1.78 (169) | |
| Other | 0.48 (46) | |
COPD, chronic obstructive pulmonary disease; ILD, interstitial lung disease.