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Table 1 Individual-level primary and secondary outcomes

From: A multicomponent family support intervention in intensive care units: study protocol for a multicenter cluster-randomized trial (FICUS Trial)

Domain/construct Measurea Range Cronbach’s αb T0 T1 T2 T3 T4
Quality of family care
 Satisfaction with care (primary outcome) Family satisfaction with ICU care (FS-ICU-24R) 0–100 > .85   X    
 Quality of communication Questionnaire on Quality of Physician-Patient Interaction (QQPPI-14) 1–5 .95   X    
 Support from nurses Family Perceived Support Questionnaire (ICE-FPSQ-14) 14–70 > 0.87   X    
Family management
 Family functioning Family Assessment Device - General Functioning Scale (FAD-GF-12) 1–4 .87 X X X X X
 Family resilience Brief Resilience Scale (BRS-6)c 1–5 .85 X X X X X
Mental health
 Subjective well-being Satisfaction with Life Scale (SWLS-5) 5–35 .89–.92 X X X X X
WHO-5 Well-Being Index (WHO-5) 0–100 .92 X X X X X
Adapted VAS on Quality of Life (QoL-VAS) 0–100 n/a X X X X X
 Psychological distress Distress Thermometer (DT) 0–10 n/a X X X X X
Impact of Events Scale-6 (IES-6) 0–4 .80 X X X X X
Hospital Anxiety and Depression Scale (HADS-14) 0–21 > .80 X X X X X
  1. aUse of German versions of measures
  2. bReferences for Cronbach’s alpha are listed in the text
  3. cAdapted for family