Table 2

 Study characteristics, prevalences of children’s passive smoking and respiratory symptoms

AustriaBulgariaCzechGermanyHungaryItalyHollandN AmericaPolandRussiaSlovakiaSwitz
East/West (E or W)WEEEEWWWEEEW
2/3 questionnaires in spring. 1 = yes, 0 = no011010001010
Post 1995 study. 1 = yes, 0 = no111010101110
Response rate <0.8. 1 = yes, 0 = no001010101011
% of children in age range 6–8 years98443432306133537173455
Frequencies of exposures (%):
Maternal smoking during pregnancy17.5%6.4%8.9%4.9%12.7%17.2%28.7%26.6%25.3%4.4%6.0%17.0%
Smoking during first 2 years of life70.1%62.0%18.7%62.9%57.6%60.7%63.4%74.8%46.3%54.9%
Current smoker in household62.5%70.9%57.4%45.8%55.9%58.2%58.1%50.4%64.9%46.1%48.4%48.2%
Prevalences of symptoms (%):
    Wheeze in last 12 months13.6716.4119.7610.219.926.769.4519.4011.8413.299.3710.32
    Asthma ever8.4916.509.728.5222.358.998.069.6910.211.866.889.00
    Bronchitis in the last 12 months23.6941.1232.5712.407.826.1934.6014.7130.9418.26
    Nocturnal dry cough10.405.3518.5418.579.4215.6621.7413.5512.8321.57
    Morning cough5.2816.0225.6113.826.176.0245.7111.3514.4011.83
    Sensitivity to inhaled allergens12.8512.3716.6714.0210.9215.1721.0013.906.4414.6513.70
    Hay fever ever5.324.557.787.1914.341.2010.10
    Woken by wheeze in the last 12 months7.0714.788.371.874.925.188.624.258.584.59