Spain | The Netherlands | Finland | ||||
---|---|---|---|---|---|---|
School exposure | Damaged (n=1425) | Non-damaged (n=1333) | Damaged (n=1146) | Non-damaged (n=1305) | Damaged (n=1903) | Non-damaged (n=2159) |
Girls | 678 (48%) | 659 (49%) | 593 (52%) | 685 (52%) | 1006 (53%) | 1098 (51%) |
Age (mean (SD) in years) | 9.1 (1.8) | 8.8 (1.7) | 9.2 (1.8) | 8.9 (1.8) | 10.0 (1.8) | 10.0 (1.9) |
BMI (mean (SD) in kg/m2)† | 17.9 (3.0) | 17.5 (3.0) | 16.5 (2.4) | 16.4 (2.5) | 17.5 (3.0) | 17.6 (2.9) |
Both parents from another country | 217 (15%) | 132 (10%)* | 57 (5%) | 192 (15%)* | 20 (1%) | 24 (1%) |
Low parental educational level | 673 (49%) | 570 (44%)* | 440 (40%) | 512 (42%) | 986 (53%) | 1007 (48%)* |
Parental history of asthma | 232 (18%) | 208 (17%) | 246 (22%) | 271 (21%) | 327 (18%) | 356 (17%) |
Parental history of nasal allergies† | 488 (37%) | 505 (41%)* | 625 (55%) | 667 (52%) | 1156 (64%) | 1335 (65%) |
Parental history of skin allergies† | 588 (44%) | 612 (49%)* | 550 (49%) | 622 (48%) | 1006 (56%) | 1163 (57%) |
Moisture damage in the home‡ | 267 (19%) | 261 (20%) | 292 (25%) | 303 (23%) | 156 (8%) | 171 (8%) |
Passive smoking in the home | 424 (30%) | 346 (26%)* | 165 (15%) | 163 (13%) | 5 (0.3%) | 3 (0.1%) |
Older siblings | 612 (43%) | 620 (47%) | 602 (53%) | 666 (51%) | 1141 (60%) | 1279 (59%) |
Current pet keeping | 542 (39%) | 451 (35%)* | 613 (54%) | 570 (44%)* | 917 (49%) | 849 (40%)* |
Physical activity§ | 810 (60%) | 809 (64%)* | 762 (69%) | 878 (70%) | 1642 (86%) | 1852 (87%) |
Number (%) are given, unless otherwise specified.
†More than 5% missing (5–10%).
‡Water damage and/or wet or damp spots on surfaces and/or mould on surfaces and/or mouldy odour at home in the last 12 months.
§Exercise outside school hours more than once a week.
*p<0.05 for difference between pupils from damaged and non-damaged schools (χ2 test).
BMI, body mass index.