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Table 1 Minimally important differences for select FACIT scales

From: The F unctional A ssessment of C hronic I llness T herapy (FACIT) Measurement System: properties, applications, and interpretation

Instrument Scale/Subscale MID (points) Reference
FACT-G PWB 2–3 [28]
  SWB NA  
  EWB 2* [28, 29]
  FWB 2–3 [28]
  Total FACT-G 3–7 [27, 28, 30, 31]
FACT-Anemia Fatigue Subscale 3–4 [27, 31]
  TOI-Fatigue 5 [27]
  TOI-Anemia 6  
  Total FACT-Anemia 7  
FACT-Breast Breast cancer subscale 2–3 [30]
  TOI-Breast 5–6  
  Total FACT-Breast 7–8  
FACT-Colorectal Colorectal cancer subscale 2–3 [32]
  TOI-Colorectal 4–6  
  Total FACT-Colorectal 5–8  
FACT-Head & Neck Total FACT-Head & Neck 6–12 [33]
FACT-Lung Lung cancer subscale 2–3 [34]
  TOI-Lung 5–6  
  1. *This MID should be considered tentative as it may be revised based on future research.