Table 2.
Number of FEV1 measurements (%) taken in the four season and their unadjusted mean values across all individuals (standard deviation).
| Country | Winter |
Spring |
Summer |
Autumn |
||||
|---|---|---|---|---|---|---|---|---|
| Number of measurements | Mean value (% predicted) | Number of measurements | Mean value (% predicted) | Number of measurements | Mean value (% predicted) | Number of measurements | Mean value (% predicted) | |
| Denmark | 16,104 (25%) | 74.97 (25.18) | 16,505 (25%) | 74.87 (25.2) | 16,014 (24%) | 74.87 (25.35) | 16,851(26%) | 74.95 (25.21) |
| UK | 14,762 (21%) | 71.1 (23.06) | 16,084 (23%) | 71.03 (23.04) | 17,565 (25%) | 71.11 (23.0) | 22,256 (31%) | 71.17 (23.17) |