Combining education and income into a socioeconomic position score for use in studies of health inequalities

BMC Public Health

Table 2 Adjacent-category logistic regression on subjective SEP: weights for the composite SEP score based on education and income

	Coefficient (SE)
Education level
Primary education < 10 yrs	Ref
Upper secondary/ vocational	0.141*** (0.034)
Undergraduate degree	0.697*** (0.038)
Postgraduate degree	1.293*** (0.037)
Income
Low income	Ref
Lower-middle income	0.193*** (0.034)
Upper-middle income	0.261*** (0.037)
High income	0.822*** (0.039)
Demographic characteristics
Age (years)	0.020*** (0.001)
Male	0.270*** (0.023)
Constant 1	0.180** (0.083)
Constant 2	-2.543*** (0.142)
Constant 3	-4.233*** (0.194)
Observations	18,988
AIC	37,550
Pseudo R²	0.0886

^*** p < 0.01, ** p < 0.05, * p < 0.1. The undergraduate and postgraduate education levels correspond to university education up to four years, and university education of four years or more, respectively; SE: Standard errors in parentheses; Male: binary variable: 0 = female; 1 = male; AIC: Akaike’s Information Criterion

ISSN: 1471-2458