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^*

		Yes	No	Total	Yes	No	Total
Prior diagnosis of OAD by PCP	Yes	106	87	193	27	11	38

	No	43	92	135	70	220	290

	Total	149	179	328	97	231	328

	PPV, %		54.9			71.1

	NPV, %		68.1			75.9

	κ value		0.22			0.28

	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.