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Table 4 Two-by-Two Tables and BpTRU predictive characteristics for achievement of ABPM diastolic target

From: The BpTRU automatic blood pressure monitor compared to 24 hour ambulatory blood pressure monitoring in the assessment of blood pressure in patients with hypertension

   Diastolic Target Achieved on ABPM (<85 mmHG mean daytime blood pressure)  
   Yes NO  
< 90 mmHG on BpTRU Yes 341 58 Sens = 92%; Spec = 43% PPV = 86%; NPV = 61%
  No 28 43  
< 85 mmHG on BpTRU Yes 299 36 Sens = 81%; Spec = 64% PPV = 89%; NPV = 48%
  No 70 65  
< 80 mmHG on BpTRU Yes 238 13 Sens = 65%; Spec = 87% PPV = 95%; NPV = 40%
  No 131 88  
< 75 mmHG on BpTRU Yes 161 5 Sens = 44%; Spec = 95% PPV = 97%; NPV = 32%
  No 208 96  
< 70 mmHG on BpTRU Yes 82 1 Sens = 22%; Spec = 99% PPV = 99%; NPV = 26%
  No 287 100