Table 3.

Interrater agreement for determination of chronic lower respiratory disease cases and exacerbations

		Classified Events	Agreement*		Disagreement†	κ-Statistic	95% CI
			Positive	Negative
HCHS/SOL
	Emergency department
	CLRD cases	56	45 (80%)	9 (16%)	2 (4%)	0.88	0.71–1.00
	CLRD exacerbations	56	41 (73%)	13 (23%)	2 (4%)	0.90	0.78–1.00
	Hospitalizations
	CLRD cases	61	47 (77%)	11 (18%)	3 (5%)	0.85	0.69–1.00
	CLRD exacerbations	61	29 (48%)	27 (44%)	5 (8%)	0.84	0.70–0.97
MESA
	Hospitalizations (ICD primary discharge diagnosis‡)
	CLRD cases	99	94 (95%)	3 (3%)	2 (2%)	0.74	0.40–1.00
	CLRD exacerbations	99	89 (90%)	3 (3%)	7 (7%)	0.42	0.07–0.78

Definition of abbreviations: CI = confidence interval; CLRD = chronic lower respiratory disease; HCHS/SOL = Hispanic Community Health Study/Study of Latinos; ICD = International Classification of Diseases; MESA = Multi-Ethnic Study of Atherosclerosis.

Percentages are calculated out of the total number of eligible events of that type (emergency department visit or hospitalization) in that cohort.

^*Positive agreement is defined as both reviewers confirming the event as at least a probable CLRD case or CLRD exacerbation; negative agreement is defined as both reviewers determining that the event was not a CLRD case or CLRD exacerbation.

^†Disagreement is defined as one reviewer classifying the event as at least a probable CLRD case or CLRD exacerbation and the other determining that it was not consistent with a CLRD case or CLRD exacerbation.

^‡All classified events in MESA had an ICD code for CLRD as the primary discharge diagnosis.