Brief case management versus usual care for frequent users of emergency departments: the Coordinated Access to Care from Hospital Emergency Departments (CATCH-ED) randomized controlled trial

Table 2 Study measures

Study measure	Data collection timeline	References
Health service use outcomes
Health Service Use Inventory	BL, 3M, 6M, 9M, 12M	[28–35]
Administrative Health Data	12-months before BL to 12-months after BL
Health outcomes
Short Form Health Survey, 12-item (SF-12)	BL, 6M, 12M	[36–38]
Euro-Qol 5D (EQ-5D)	BL, 6M, 12M	[38–41]
Quality of Life Index, 20-item (QoLI-20)	BL, 6M, 12M	[42, 43, 63]
Colorado Symptom Index, modified (CSI)	BL, 6M, 12M	[44–47]
Addiction Severity Index (ASI)	BL, 6M, 12M	[48]
Additional measures
Socio-demographic questions	BL
Comorbid Conditions (CMC) list	BL, 3M, 6M, 9M, 12M	[47, 49, 50]
Diagnostic information	BL, 6M, 12M
Access to Care questions	BL, 6M, 12M	[50, 51, 64]
Working Alliance Inventory-Participant (WAI-PAR)	3M, 6M	[52–56]

Abbreviations BL Baseline interview, 3M 3-month interview, 6M 6-month interview, 9M 9-month interview, 12M 12-month interview

ISSN: 1472-6963