Do socio-demographic characteristics and/or health status explain the magnitude of differences between patient and general public utility values? A chronic low back pain patients case study

Table 1 overview of the included socio-demographic and health status variables

	Variables	Measurement scale
Socio-demographic	Age	Years
	Gender	Man = 0; Woman = 1
	Education	Educational level: low = lower secondary education or less, medium = higher secondary education, high = college or university
	Social support	No = 0; Yes = 1
Health status	Back pain intensity	Numeric rating scale (range: 0 = no pain – 10 = worst imaginable pain)
	Leg pain intensity	Numeric rating scale (range: 0 = no pain −10 = worst imaginable pain)
	Functional status	Measured using the Oswestry Disability Index (range: 0 = no disability – 100 = maximum disability possible)
	Comorbidities	Do you suffer from any other condition that influences your quality of life?
	Comorbidities	No = 0; Yes = 1
	Catastrophizing	I feel that my back pain is terrible and it’s never going to get any better: No = 0; Yes = 1
	Treatment expectations	Do you expect to be free of complaints after treatment? No = 0; Yes = 1

ISSN: 1477-7525