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Table 5 Construct validity properties of the BCI and FACT-Bl-Cys

From: Translation and validation of two disease-specific patient-reported outcome measures (Bladder Cancer Index and FACT-Bl-Cys) in Dutch bladder cancer patients

Correlation expected Hypotheses tested Correlation coefficient (r) Confirmed?
T0 BCI
Low (< 0.30) Correlations between 3 domains are low Urinary – Bowel 0.35 No
Urinary – Sexual 0.15 Yes
Bowel – Sexual 0.25 Yes
Moderate (0.30–0.69) Correlations between 3 domains and FACT-G are moderate FACT-G – Urinary 0.29 No
FACT-G – Bowel 0.39 Yes
FACT-G – Sexual 0.36 Yes
Correlations between 3 domains and EQ-5D-5 L are moderate EQ-5D-5 L – Urinary 0.34 Yes
EQ-5D-5 L – Bowel 0.38 Yes
EQ-5D-5 L – Sexual 0.24 No
Correlations between 3 domains and EQ-VAS are moderate VAS – Urinary 0.37 Yes
VAS – Bowel 0.32 Yes
VAS – Sexual 0.28 No
T3 FACT-Bl-Cys
Moderate (0.30–0.69) Correlations between 5 domains are moderate PWB – SWB 0.30 Yes
PWB – EWB 0.51 Yes
PWB – FWB 0.65 Yes
PWB – Bl-Cys 0.63 Yes
SWB – EWB 0.29 No
SWB – FWB 0.41 Yes
SWB – Bl-Cys 0.35 Yes
EWB – FWB 0.59 Yes
EWB – Bl-Cys 0.50 Yes
FWB – Bl-Cys 0.64 Yes
Correlation between Bl-Cys domain and EQ-5D-5 L is moderate Bl-Cys domain – EQ-5D-5 L 0.60 Yes
Correlation between total FACT-Bl-Cys and EQ-5D-5 L / EQ-VAS are moderate FACT-Bl-Cys total score – EQ-5D-5 L 0.70 Yes
FACT-Bl-Cys total score – VAS 0.58 Yes
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