Table 2: Univariate relationships between different factors and serum total IgE in a sample of children.

VariableB coefficient 𝑃 -value

Perinatal factor
Birth weight (per 100 g)0.103.063
Birth length (per cm)0.018.125
Gestation (per week)0.000.967
Preterm−0.002.989
Not breastfed−0.019.908
Supplementation0.001.991
Smoking in pregnancy0.066.184
Smoking in home−0.056.382
Parental predisposition0.133.013
Season of birth.926

Early life factors
Pneumonia0.128.117
Antibiotics−0.006.923
Wheezy bronchitis0.319.0004

Socioeconomic factors
Mother age−0.004.509
Mother education0.096.184
Mother alone−0.001.984
Mother smoke−0.107.130
Father age−0.010.110
Father education0.078.361
Father smoke0.006.941
Household income0.012.539

Demographic factors
Sex0.168.008
Age (per year)−0.018.101
BMI (per unit)0.006.532
Smoking−0.217.062

Clinical and paraclinical factors
FEV/FVC−0.825.130
AHR0.413.000002
Asthma0.279.011
Hay fever0.387.000000
Positive skin prick test0.761.000000
Atopisk dermatitis0.264.0002