Table 1 missing data summary for key characteristics in datasets. Contacts only column does not contain secondary cases for ease of comparison. UPRN = Unique Property Reference Number
Exposure variable | Index cases n = 11,307 | Contacts only n = 662,560 | Secondary cases n = 5,289 |
|---|---|---|---|
Missing data, n = (%) | |||
Whether symptomatic or not | 0 (0) | Not applicable | Not required |
Age | 0 (0) | 0 (0) | 0 (0) |
Vaccination status | 1,316 (12) | 262,354 (40) | 2,145 (41) |
Sex | 6,849 (61) | 575,179 (87) | 4,424 (84) |
Seat number | 1,757 (16) | 662,560 (100) | 2,619 (50) |
Flight duration | Not required | 599,275 (90) | 4,897 (93) |
Genomic data | 8,379 (74) | Not applicable | 4,526 (86) |
UPRN | 2,559 (23) | 114,341 (22) | 1,003 (19) |