Table 5:

Agreement between diagnoses of asthma and chronic obstructive pulmonary disease by primary care providers and those derived from pulmonary function testing

PFT-derived diagnoses
Asthma*COPD*
YesNoTotalYesNoTotal
Prior diagnosis of OAD by PCPYes10687193271138
No439213570220290
Total14917932897231328
PPV, %54.971.1
NPV, %68.175.9
κ value0.220.28
p value< 0.001< 0.001
  • Note: COPD = chronic obstructive pulmonary disease, NPV = negative predictive value, OAD = obstructive airway disease, PCP = primary care provider, PFT = pulmonary function testing, PPV = positive predictive value.

  • * A total of 11 patients had both asthma and COPD diagnoses.