Table 3 Multivariable regression analysis with factors associated with symptoms and feelings, and sleep disruption.

Age of child (years)

1.03

[1.01, 1.06]

0.02

1.00

[0.97, 1,02]

0.78

0.99

[0.95, 1.03]

0.63

0.97

[0.94, 1.01]

0.13

Male

1(Ref)

Female

1.06

[0.94, 1.19]

0.35

1.11

[0.96, 1.27]

0.15

1.04

[0.89, 1.21]

0.61

1.02

[0.81, 1.28]

0.89

Disease duration (years)

1.01

[0.98, 1.04]

0.56

1.02

[1.00, 1.04]

0.04

0.99

[0.95, 1.04]

0.80

1.03

[1.00, 1.06]

0.05

Mild

1(Ref)

Moderate

1.24

[1.10, 1.41]

0.001

1.20

[1.04, 1.40]

0.02

1.11

[0.93, 1.33]

0.24

1.63

[1.25, 2.13]

p < 0.001

Severe

1.31

[1.07, 1.61]

0.01

1.20

[0.98, 1.47]

0.08

1.49

[1.19, 1.87]

0.001

1.97

[1.50, 2.60]

p < 0.001

Chinese

1(Ref)

Indian

1.00

[0.85, 1.18]

0.97

1.07

[0.87, 1.30]

0.54

1.24

[1.02, 1.50]

0.03

1.06

[0.78, 1.45]

0.70

Malay

0.99

[0.75, 1.30]

0.93

1.08

[0.79, 1.46]

0.64

1.49

[1.18, 1.88]

0.001

1.34

[0.86, 2.07]

0.19

Others

1.12

[0.88, 1.42]

0.36

1.17

[0.87, 1.59]

0.30

1.18

[0.82, 1.69]

0.37

0.86

[0.46, 1.61]

0.63

Polytechnic and professional

1(Ref)

Primary and secondary

1.04

[0.86, 1.25]

0.70

1.00

[0.85, 1.18]

0.98

1.35

[1.06, 1.72]

0.02

0.95

[0.71, 1.26]

0.72

University

0.96

[0.84, 1.11]

0.59

0.91

[0.77, 1.09]

0.32

0.97

[0.82, 1.15]

0.75

0.87

[0.65, 1.16]

0.35

Number of children in family

0.97

[0.90, 1.06]

0.54

0.95

[0.87, 1.03]

0.23

1.02

[0.92, 1.12]

0.76

1.04

[0.90, 1.19]

0.63

HDB 1–3 rooms

1(Ref)

HDB 4–5 rooms

1.07

[0.86, 1.33]

0.55

0.99

[0.82, 1.21]

0.93

0.97

[0.72, 1.30]

0.85

0.94

[0.70, 1.26]

0.67

Private housing (condo, landlord)

1.03

[0.80, 1.31]

0.84

0.78

[0.60, 1.01]

0.06

1.10

[0.77, 1.56]

0.61

0.93

[0.61, 1.42]

0.73