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Table 4 Known-group Validity of the TSQM-9

From: Validation of an abbreviated Treatment Satisfaction Questionnaire for Medication (TSQM-9) among patients on antihypertensive medications

      Effect Size
Domain Low Compliers (Modified Morisky Scale < 6) Medium Compliers (Modified Morisky Scale > = 6 but < 7) High Compliers (Modified Morisky Scale = 7) p-value Medium Compliers – Low Compliers
Effectiveness     < 0.0001 0.68
   n 200 195 1   
   Lsmean (SE) 66.08 (1.93) 77.11 (1.97) NA   
   Mean (SD) 67.53 (18.85) 79.37 (16.07) 100 (-)   
   Median 66.67 83.33 100   
   Minimum, maximum 5.56, 100 11.11, 100 100, 100   
Convenience     < 0.0001 0.88
   n 200 195 1   
   Lsmean (SE) 71.67 (1.60) 84.02 (1.64) NA   
   Mean (SD) 72.31 (16.42) 85.13 (12.31) 100 (-)   
   Median 72.22 83.33 100   
   Minimum, maximum 16.68, 100 50, 100 100, 100   
Global Satisfaction     < 0.0001 0.65
   n 200 195 1   
   Lsmean (SE) 68.36 (1.94) 79.27 (1.98) NA   
   Mean (SD) 69.82 (19.86) 81.25 (15.19) 100 (-)   
   Median 71.43 85.71 100   
   Minimum, maximum 0, 100 21.43, 100 100, 100   
  1. p-value and lsmean for compliance level based on analysis of covariance (ANCOVA) model controlling for patient age, gender and race/ethnicity; Since only one individual in the study was classified as a high complier, analyses were conducted among low and medium compliers only.
  2. Effect size based on Cohen's d;