Table 3 Results of univariate and multivariate regression analyses for the association of objective variables with pre-SBS

 Male

0.96

0.71

1.30

 20-29

Ref.

Ref.

 30-39

0.62

0.33

1.15

0.50

0.22

1.11

 40-49

0.50*

0.27

0.90

0.46*

0.21

0.99

 50-59

0.26***

0.14

0.50

0.26**

0.12

0.57

 60-69

0.20***

0.09

0.45

0.25**

0.10

0.64

 Asthma

1.18

0.75

1.86

 Atopic dermatitis

0.84

0.52

1.35

 Rash

1.08

0.55

2.14

 Hay fever

1.35

0.99

1.83

1.58**

1.14

2.19

 Allergic rhinitis

2.52***

1.76

3.62

2.63***

1.85

3.74

 Allergic conjunctivitis

0.73

0.39

1.39

 Food allergy

1.61

0.81

3.21

 Urticaria

1.07

0.69

1.67

 Mental illnesses

2.25**

1.31

3.86

2.07*

1.16

3.68

 Never

Ref.

 Quit

1.15

0.81

1.63

 Current

1.02

0.71

1.47

Interest in air quality and odor

1.51*

1.10

2.08

Sensitivity of family members to VOCs and odor

2.32***

1.69

3.18

2.11***

1.53

2.92

 < 5 years

Ref.

 5 -< 10 years

0.79

0.49

1.27

 10 -< 20 years

0.59*

0.38

0.92

 ≥ 20 years

0.53**

0.34

0.84

Condensation in winter

1.61**

1.10

2.36

1.59*

1.09

2.34

1.20

0.88

1.63

 Prior to the S55 standard

Ref.

 Standard S55

1.15

0.61

2.19

 Standard H4

1.09

0.61

1.94

 Standard H11

1.85

0.90

3.78

Moisture and musty odor

1.97***

1.41

2.74

1.73**

1.23

2.43

 No

Ref.

Ref.

 Rare

0.81

0.51

1.29

0.75

0.46

1.22

 Sometimes

1.26

0.83

1.91

1.17

0.76

1.79

 Often

1.65*

1.07

2.54

1.46

0.93

2.28

Ventilation less than once/day

1.11

0.81

1.52

Cleaning frequency less than once/week

1.54*

1.06

2.23

1.60*

1.11

2.31