Variable | Measurement Instrument | Data Source | Data Collection Period |
---|---|---|---|
Independent Variable | Â | Â | Â |
PMI | Conjoint analysis survey/Doctors' recommendations | Participants | t 1 |
PMI | Doctors' recommendations | Participants' medical records | t 1 , t 2 , t 3 |
Dependent Variable | Â | Â | Â |
PASI scores | Physician-assessed PASI [17] | Participants' medical records | t 1 , t 2 , t 3 |
TSQM scores | Self-reported TSQM questionnaire [18] | Participants | t 1 , t 2 , t 3 |
DLQI scores | Self-reported DLQI questionnaire [19] | Participants | t 1 , t 2 , t 3 |
Confounders | Â | Â | Â |
Demographic factors | Standard German demographic questionnaire | Participants | t 1 |
Sex Age Partnership Living with a partner/living alone Education Highest educational attainment Income Net monthly household income Number of household members Employment status Full-time Part-time Not working | Â | Â | Â |
Treatment factors | Self-reported questionnaire | Participants | t 1 |
Currently receiving psoriasis treatment or not Type of psoriasis treatment (topical, UV therapy, Tablets, injections/infusions) | Â | Â | Â |
Disease-related factors | Self-reported questionnaire | Participants | t 1 |
Time since diagnosis Co-morbidities Psoriatic arthritis Depression Allergy High blood pressure Cardiovascular disease Hyperlipidemia Chronic lung disease, asthma Liver disease Diabetes Cancer | Â | Â | Â |