The final most parsimonious multivariate logistic regression models also included the fixed effects of sex, ethnicity group, maximum parental education level, single parent, household smoker, parental history of allergy and/or asthma.
Education level was classified into four categories: No education, primary education, secondary education and higher education.
Participants were selected by maximum variation sampling to represent a variety of age groups, education level, socio-economic status and relationship type.
Participants were selected purposefully by maximum variation sampling to represent a variety of age groups, education level and socio-economic status.
Education level Primary education 12.74 0.44 Both adults have a primary education level.
To include participants with different background variables such as work/study status, age, gender, occupation, education level, socioeconomic status, functional level, and symptom burden, a purposive maximum variation sample was selected [ 25].
> > The coefficients for education level vary between countries, so in order to estimate their maximum contribution to the explanation of differences in fertility, separate models were fitted to each country, as set out in the Methods section.
Their education level is lower.
Support also rises with education level.
