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Table 2 Internal consistency and intrascale correlations for the TSQM at baseline and at 12 weeks

From: Treatment satisfaction is associated with improved quality of life in patients treated with inhaled treprostinil for pulmonary arterial hypertension

  Cronbach α Effectiveness Side effects Convenience
At baseline (on iloprost)
Effectiveness 0.89 1.00   
Side effects 0.93 0.21 (p = 0.10) 1.00  
Convenience* 0.91 0.26 (p = 0.03) 0.13 (p = 0.29) 1.00
Global satisfaction 0.93 0.79 (p < 0.0001) 0.23 (p = 0.06) 0.42 (0.0005)
At 12 weeks (on treprostinil)
Effectiveness 0.90 1.00   
Side effects 0.88 0.54 (p < 0.0001) 1.00  
Convenience 0.91 0.51 (p < 0.0001) 0.44 (p = 0.0002) 1.00
Global satisfaction 0.93 0.78 (p < 0.0001) 0.52 (p < 0.0001) 0.73 (p < 0.0001)
  1. * 1 missing.
  2. † 2 missing.