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Table 4 Construct Validity as measured by Interscale Pearson Correlations*

From: A disease-specific measure of health-related quality of life for use in adults with immune thrombocytopenic purpura: Its development and validation

Scales S FT B A PH FR SA W RH QoL
Symptoms (S) - 0.67 0.67 0.56 0.60 0.53 0.56 0.39 0.32 0.50
Fatigue/Sleep (FT)   - 0.75 0.75 0.65 0.54 0.59 0.36 0.19 0.64
Bother-Physical Health (B)    - 0.75 0.79 0.56 0.79 0.45 0.08 0.78
Activity (A)     - 0.63 0.47 0.62 0.49 -0.02 0.74
Psychological (PH)      - 0.73 0.73 0.60 -0.03 0.76
Fear (FR)       - 0.58 0.48 0.07 0.58
Social Activity (SA)        - 0.59 0.04 0.70
Work (W)         - 0.08 0.66
Reproductive Health (RH)          - 0.13
Overall QoL (QoL)           -
  1. p < 0.05