Age yrs | ||||
1 | 2 | 3 | 4 | |
Subjects | 4787 | 4644 | 4301 | 4297 |
Wheezing | 4493 | 4551 | 4228 | 4219 |
No | 3202 (71.3) | 3638 (79.9) | 3691 (87.3) | 3675 (87.1) |
Yes | 1291 (28.7) | 913 (20.1) | 537 (12.7) | 544 (12.9) |
1–3 times per year | 992 (22.1) | 756 (16.6) | 432 (10.2) | 449 (10.6) |
≥4 times per year | 299 (6.7) | 157 (3.4) | 105 (2.5) | 95 (2.3) |
Shortness of breath | 4498 | 4570 | 4236 | 4239 |
No | 3495 (77.7) | 3750 (82.1) | 3738 (88.2) | 3787 (89.3) |
Yes | 1,003 (22.3) | 820 (17.9) | 498 (11.8) | 452 (10.7) |
1–3 times per year | 781 (17.4) | 642 (14.0) | 396 (9.3) | 346 (8.2) |
≥4 times per year | 222 (4.9) | 178 (3.9) | 102 (2.4) | 106 (2.5) |
Dry cough | 4446 | 4579 | 4191 | 4231 |
No | 3453 (77.7) | 3484 (76.1) | 3200 (76.4) | 3099 (73.2) |
Yes | 993 (22.3) | 1095 (23.9) | 991 (23.6) | 1132 (26.8) |
Persistent phlegm | 4437 | 4541 | 4267 | 4267 |
No | 3854 (86.9) | 4098 (90.2) | 3986 (93.4) | 3959 (92.8) |
Yes | 583 (13.1) | 443 (9.8) | 281 (6.6) | 308 (7.2) |
Data are presented as n or n (%).