TABLE 1

Study Population Characteristics (n = 1029)

CharacteristicNo. of Respondents (%)
Boy483 (47)
Resident in Kiruna312 (30)
Mother
 Born in Sweden899 (87)
 College/university degree510 (50)
 History of allergy498 (48)
Father
 Born in Sweden886 (86)
 College/university degree385 (37)
 History of allergy399 (39)
Child had siblings952 (92)
Smoking exposure
 Mother smoked during pregnancy62 (6)
 Smoking inside house during child’s first year of life37 (4)
Pet exposure
 Pets during pregnancy294 (29)
 Pets during first year of life293 (28)
Attended day care940 (91)
Current residence
 Flat240 (23)
 Detached, semidetached, or row house783 (76)
 Farm6 (<1)
Dishwashing practices
 Hand dishwashing126 (12)
 Machine dishwashing868 (84)