Measures were categorised into 44 burden measures, 43 mastery measures, 61 mood measures, 32 QoL measures, 27 social support and relationships measures and 21 staff competency and morale measures.
The subscales of each measure were categorised as measuring perceived, experienced or self-stigma using descriptions in the scale development papers.
The extracted measures were categorised as either single-item or multi-item measures.
Also, the UK and Dutch cohorts used different instruments to measure mood (and pain), and this is likely to contribute to discrepancies when these measures are categorised to indicate presence/absence (or degree) of symptoms.
To further examine this effect, TAOS measures were categorised in tertiles.
Other than BMI, measures were categorised using quartile distributions of participants.
Measures were categorised into ratio-based, procedure-based, care-based and diagnostic or casemix-based methodologies.
Lastly, the outcome measures were categorised according to the major domains of cognition and emotion, functioning, quality of life or multidimensional.
SES was based on SEIFA quintiles and ARIA+ measures were categorised as major city and other (i.e., inner regional, outer regional, remote/very remote).
Both occupational class measures were categorised into four groups (professional and intermediate (I and II), skilled non-manual (IIINM), skilled manual (IIIM) and partly skilled and unskilled (IV and V)).
