Demographics of symptomatic (V1) vs asymptomatic (C1) RV-positive patients
| Total n=633 | RV +V1 n=566 | RV +C1 n=67 | P value | |
| Male (%) | 263 (42) | 229 (40) | 34 (51) | 0.106 |
| Age (median, IQR) | 47 (32–60) | 47 (33–60) | 38 (27–58) | 0.058 |
| Ethical background (%) | 563 | |||
| Caucasian | 540 (96) | |||
| African | 8 (1) | |||
| Asian | 10 (2) | |||
| Other | 5 (1) | |||
| Study site (%) | 0.281 | |||
| Antwerp BE | 95 (15) | 85 (15) | 10 (15) | |
| Barcelona SP | 66 (10) | 64 (11) | 2 (3) | |
| Bialystok PL | 28 (4) | 24 (4) | 4 (6) | |
| Bratislava SL | 30 (5) | 29 (5) | 1 (1) | |
| Cardiff GB | 64 (10) | 57 (10) | 7 (10) | |
| Ghent BE | 25 (4) | 20 (4) | 5 (7) | |
| Jesenice SVN | 10 (2) | 10 (2) | 0 (0) | |
| Jonkoping SW | 8 (1) | 7 (1) | 1 (1) | |
| Lodz PL | 52 (8) | 47 (8) | 5 (7) | |
| Mataró SP | 79 (12) | 68 (12) | 11 (16) | |
| Milan IT | 7 (3) | 17 (3) | 0 (0) | |
| Nice FR | 3 (0.5) | 3 (1) | 0 (0) | |
| Rotenberg DU | 27 (4) | 25 (4) | 2 (3) | |
| Southampton GB | 43 (7) | 39 (7) | 4 (6) | |
| Szczecin PL | 27 (4) | 22 (4) | 5 (7) | |
| Utrecht NL | 59 (9) | 49 (9) | 10 (15) | |
| Sample season and year (%) | 632 | 565 | 67 | 0.918* |
| Autumn 07 | 37 (6) | 34 (6) | 3 (4) | |
| Winter 07/08 | 49 (8) | 43 (8) | 6 (9) | |
| Spring 08 | 73 (12) | 67 (12) | 6 (9) | |
| Summer 08 | 4 (1) | 4 (1) | 0 (0) | |
| Autumn 08 | 118 (19) | 106 (19) | 12 (18) | |
| Winter 08/09 | 64 (10) | 55 (10) | 9 (13) | |
| Spring 09 | 44 (7) | 40 (7) | 4 (6) | |
| Summer 09 | 4 (1) | 4 (1) | 0 (0) | |
| Autumn 09 | 131 (37) | 118 (21) | 13 (19) | |
| Winter 09/10 | 77 (12) | 69 (12) | 8 (12) | |
| Spring 10 | 31 (5) | 25 (4) | 6 (9) | |
| Underlying condition (%) | 238/563 (42) | |||
| Asthma | 67/563 (12) | |||
| COPD | 41/563 (7) | |||
| Other respiratory comorbidities | 7/563 (1) | |||
| History of hospitalisation for respiratory illness | 24/563 (4) | |||
| Cardiac disease | 47/563 (8) | |||
| Diabetes | 35/562 (6) | |||
| Allergic diseases | 105/563 (23) | |||
*Overall sample season and year, symptomatic (V1) vs asymptomatic (C1).
COPD, chronic obstructive pulmonary disease; RV, rhinovirus.