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 | - | - |