Skip to main content

Table 2 Score distributions, ceiling effect, reliability and item-scale convergence of the FACT-Ga and EQ-5D

From: Validation of the functional assessment of cancer therapy-gastric module for the Chinese population

  Mean (SD) Median Range Ceiling effect* (%) Cronbach’s α Item correlation with its own scale (range) No of success /total (%)
PWB 24.3 (4.08) 26 5–28 26.9 0.85 0.47–0.73 7/7 (100)
SWB 21.5 (5.45) 23 8–28 16.4 0.82 0.44–0.68 7/7 (100)
EWB 20.1 (3.40) 21 10–24 16.4 0.62 0.08–0.56 4/6 (67)
FWB 19.3 (6.58) 21 5–28 10.5 0.89 0.47–0.81 7/7 (100)
GCS 59.9 (12.18) 63 27–76 4.5 0.90 0.25–0.78 15/19 (79)
FACT-G 85.2 (14.55) 86 47–108 3.0 0.89 0.08–0.81 25/27 (93)
FACT-Ga 144.7 (24.51) 149 74–184 3.0 0.93 0.08–0.81 40/46 (87)
EQ-5D 0.80 (0.28) 0.88 −0.06–1 47.8 0.81 - -
  1. *Percentage of subjects who reached the highest score of the scale.
  2. Success refers to an item’s Pearson correlation coefficient with its own scales equal or greater than 0.4.
  3. Cronbach’s α was computed based on 6 items exclusive of GS7.