Description of the Coding of the Independent Variables Included in the Regression Model

Independent VariableCoding of Variable
Chronological ageTreated as a continuous variable in 1 mo increments
Disability status0 = no additional disabilities
1 = additional disabilities
Adherence to the 1-3-6 EHDI guidelines0 = does not meet
1 = meets
Adult who is deaf or hard of hearing in the home0 = not present
1 = present
Maternal level of education0 = less than a bachelor’s degree
1 = bachelor’s degree and higher
Degree of hearing loss0 = mild to moderate
1 = moderately severe to profound