Appendix Table 2.

Population, Exposition, Outcomes (PEO) Strategy

MEDLINE
POPULATION	Frozen Shoulder [MeSH Terms] Frozen shoulder contracture syndrome Adhesive capsulitis Stiff shoulder Shoulder Adhesive Capsulitis Capsulit∗ Bursitis [MeSH Terms] Adhesive Capsulitis of the Shoulder
EXPOSITION	psychosocial psychosocial factors psychological psychology [MeSH Terms] fear [MeSH Terms] avoid∗ avoidance behaviour avoidance learning [MeSH Terms] Avoidance Behavior Avoidance Behaviors catastrophization [MeSH Terms] catastroph∗ Catastrophizing Pain Catastrophizing anxiety [MeSH Terms] hypervigilance depression [MeSH Terms] depressive disorder [MeSH Terms] expectation [MeSH Terms] motivation [MeSH Terms] Expectations Kinesiophobia optimism
OUTCOME	Disability Pain Health-related quality of life Return to work Return to recovery