Table 1 General characteristics of the included subjects.
All subjects (n = 4597) | Subjects with full records (n = 3738) | Subjects with full and imputed records (n = 4584) | |
|---|---|---|---|
Patient age | (n = 4510) | ||
Median (range) | 28 (0 to 99) | 27 (0 to 99) | 28 (0 to 99) |
Mean (SE) | 30.0 (0.29) | 29.4 (0.32) | 30.0 (0.28) |
Number of subjects (%) | |||
By influenza year | |||
2002-2003 | 585 (12.73) | 479 (12.81) | 584 (12.74) |
2003-2004 | 1066 (23.19) | 851 (22.77) | 1064 (23.21) |
2004-2005 | 996 (21.67) | 825 (22.07) | 995 (21.71) |
2005-2006 | 785 (17.08) | 663 (17.74) | 785 (17.12) |
2006-2007 | 1165 (25.34) | 920 (24.61) | 1156 (25.22) |
During an influenza epidemic | 3221 (70.07) | 2650 (70.89) | 3212 (70.07) |
With ILI-contact in family. school- or workplace | 1492 (32.46) | 1195 (31.97) | 1490 (32.50) |
Vaccinated against influenza | 466 (10.14) | 377 (10.09) | 465 (10.14) |
During an RSV epidemic | 2039 (44.36) | 1635 (43.74) | 2036 (44.42) |
Number of symptoms | |||
Median (range) | 8 (0 to 18) | 9 (1 to 18) | 9 (1 to 18) |
Mean (SE) | 8.4 (0.04) | 8.6 (0.04) | 8.6 (0.04) |
Number of illness days a | (n = 4381) | ||
Median (range) | 1.5 (0 to 39) | 1.5 (0 to 14) | 2 (0 to 14) |
Mean (SE) | 1.76 (0.02) | 1.72 (0.02) | 1.77 (0.02) |
Number of records per GP | (n = 138) | (n = 134) | (n = 137) |
Median (range) | 10 (1 to 247) | 7 (1 to 217) | 10 (1 to 246) |
Mean (SE) | 33.5 (4.5) | 27.9 (4.0) | 33.5 (4.5) |