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Table 3 Attitude toward treatment adherence as a proxy measurement of Treatment adherence with pill count as gold standard.

From: Performance of two questionnaires to measure treatment adherence in patients with Type-2 Diabetes

ATTITUDES TOWARD TREATMENT ADHERENCE TREATMENT ADHERENCE  
  Good Poor  
Positive 63 144 207
Negative 47 153 200
  110 297 407
  1. Sensitivity (95% CI): 57.2% (47.4–66.6)
  2. Specificity (95% CI): 51.5% (45.6–57.3)
  3. Positive predictive value (95% CI): 30.4% (24.2–37.1)
  4. Negative predictive value (95% CI): 76.5% (70.0–82.1)
  5. Positive likelihood ratio (95% CI): 1.18 (0.97–1.44)
  6. Negative likelihood ratio (95% CI): 0.83 (0.65–1.06)
  7. Pre-test odds (95% CI): 0.36 (0.28–0.44)
  8. Positive post-test odds (95% CI): 0.42 (0.27–0.63)
  9. Positive post-test probability (95% CI): 0.29 (0.21–0.38)
  10. Negative post-test odds (95% CI): 0.29 (0.18–0.46)
  11. Negative post-test probability (95% CI): 0.22 (0.15–0.31)