Table 1.
Characteristics of offspring, parents and grandparents by parents exposed to either microorganisms, pesticides, allergens and/or chemicals or non-exposed
| Exposed | Non-exposed | Total | ||||
|---|---|---|---|---|---|---|
| Offspring, n | 1324 | 2661 | 3985 | |||
| Female, n (%) | 743 | (56.1) | 1528 | (57.4) | 2271 | (57.0) |
| Age at data collection mean, SD | 28.5 | (6.7) | 30.3 | (7.7) | 29.7 | (7.5) |
| Asthma 0–15 years, n (%) | 198 | (15.0) | 377 | (14.2) | 575 | (14.4) |
| Asthma onset 0–3 years, n (%) | 59 | (4.5) | 97 | (3.6) | 156 | (3.9) |
| Asthma onset 4–15 years, n (%) | 139 | (10.5) | 280 | (10.5) | 419 | (10.5) |
| Allergy, n (%) | 748 | (56.5) | 1535 | (57.7) | 2283 | (57.3) |
| Centre | ||||||
| Aarhus, n (%) | 80 | (6.0) | 239 | (9.0) | 319 | (8.0) |
| Albacete, n (%)a | <5 | (<0.4) | <25 | (<0.9) | <30 | (<0.8) |
| Huelva, n (%)a | <5 | (<0.4) | <15 | (<0.6) | <20 | (<0.5) |
| Reykjavik, n (%) | 134 | (10.1) | 399 | (15.0) | 533 | (13.4) |
| Bergen, n (%) | 206 | (15.6) | 581 | (21.8) | 787 | (19.7) |
| Gothenburg, n (%) | 83 | (6.3) | 204 | (7.7) | 287 | (7.2) |
| Umea, n (%) | 422 | (31.9) | 397 | (14.9) | 819 | (20.6) |
| Uppsala, n (%) | 327 | (24.7) | 529 | (19.9) | 856 | (21.5) |
| Melbourne, n (%) | 6 | (0.5) | 117 | (4.4) | 123 | (3.1) |
| Tartu, n (%) | 57 | (4.3) | 155 | (5.8) | 212 | (5.3) |
| Parents, n | 995 | 1936 | 2931 | |||
| Female | 572 | (57.5) | 1065 | (55.0) | 1637 | (55.9) |
| Age at data collection mean, SD | 42.4 | (6.6) | 43.8 | (6.4) | 43.3 | (6.5) |
| Asthma <10 years, n (%) | 40 | (4.0) | 68 | (3.5) | 108 | (3.7) |
| Asthma >10 years, n (%) | 81 | (8.1) | 149 | (7.7) | 230 | (7.8) |
| Place of upbringing, n (%) | ||||||
| Farm | 240 | (24.1) | 315 | (16.3) | 555 | (18.9) |
| Village, small town, suburb of city | 656 | (65.9) | 1317 | (68.0) | 1973 | (67.3) |
| Inner city | 99 | (9.9) | 304 | (15.7) | 403 | (13.7) |
| Educational levelb | ||||||
| Primary, n (%) | 112 | (11.6) | 173 | (9.6) | 285 | (10.3) |
| Secondary, n (%) | 411 | (42.5) | 637 | (35.4) | 1048 | (37.9) |
| University/College, n (%) | 445 | (46.0) | 988 | (54.9) | 1433 | (51.8) |
| Smokers, n (%) | 510 | (51.3) | 1015 | (52.4) | 1525 | (52.0) |
| Centre | ||||||
| Aarhus, n (%) | 66 | (6.6) | 192 | (9.9) | 258 | (8.8) |
| Albacete, n (%)a | <5 | (<0.5) | <20 | (<1.0) | <25 | (<0.9) |
| Huelva, n (%)a | <5 | (<0.5) | <10 | (<0.5) | <15 | (<0.5) |
| Reykjavik, n (%) | 112 | (11.3) | 306 | (15.8) | 418 | (14.3) |
| Bergen, n (%) | 149 | (15.0) | 405 | (20.9) | 554 | (18.9) |
| Gothenburg, n (%) | 66 | (6.6) | 153 | (7.9) | 219 | (7.5) |
| Umea, n (%) | 304 | (30.6) | 276 | (14.3) | 580 | (19.8) |
| Uppsala, n (%) | 236 | (23.7) | 380 | (19.6) | 616 | (21.0) |
| Melbourne, n (%) | 6 | (0.6) | 69 | (3.6) | 75 | (2.6) |
| Tartu, n (%) | 49 | (4.9) | 131 | (6.8) | 180 | (6.1) |
| Grandmothers, n | 995 | 1936 | 2931 | |||
| Educational level | ||||||
| Primary, n (%) | 692 | (69.5) | 1287 | (66.5) | 1979 | (67.5) |
| Secondary, n (%) | 216 | (21.7) | 470 | (24.3) | 686 | (23.4) |
| University/College, n (%) | 87 | (8.7) | 179 | (9.2) | 266 | (9.1) |
| Grandfathers, n | 995 | 1936 | 2931 | |||
| Educational level | ||||||
| Primary, n (%) | 584 | (58.7) | 1019 | (52.6) | 1603 | (54.7) |
| Secondary, n (%) | 271 | (27.2) | 579 | (29.9) | 850 | (29.0) |
| University/College, n (%) | 140 | (14.1) | 338 | (17.5) | 478 | (16.3) |
a
Due to data security, i.e. the European Data Protection Regulation, we are not allowed to show results based on microdata (<5 persons); data are available on request for authorized research units.
b
Educational level, missing: exposed n = 27, non-exposed n = 138, total n = 165.