Table 5.

Pulmonary function pattern and radiographic findings in patients who underwent spirometry.

Patient	Smoking  status	Percent predicted		FEV1/FVC  ratio	LLN FEV1/FVC  ratio	Hematology		Chest radiographs		Pulmonary function pattern
		FVC	FEV1			Total WBC#	Neut*%	PE	IVM	ATS/ERS Task force£	Mannino et al.¥ [16]	Graniteville criteria$
1	Current	59	43	0.55	0.63	9.3	73.8	Yes	Yes	O	Severe O	O
2	Current	40	37	0.75	0.71	14.2	Miss.	Yes	No	U	R	R
3	Current	50	58	0.79	0.67	15.2	Miss.	Yes	No	U	R	R
4	Current	45	45	0.85	0.74	19.7	Miss.	Yes	No	R	R	R
5	Nonsmoker	56	46	0.73	0.76	16	80	Yes	No	O	R	M
6	Nonsmoker	68	63	0.69	0.68	11	75	No	No	U	Moderate O	O
7	Nonsmoker	71	66	0.81	0.71	12.1	86	No	No	U	R	R
8	Nonsmoker	71	75	0.87	0.70	14.4	79.3	No	Yes	R	R	R
9	Nonsmoker	66	64	0.78	0.71	16.9	Miss.	Yes	No	U	R	R
10	Former	46	37	0.81	0.71	10.3	84	Yes	No	U	R	R

^#×10³ cells/μL, *neutrophils.

PE: pulmonary edema; IVM: increased vascular markings; Miss.: missing.

O: obstructive pattern; R: restrictive pattern; M: mixed pattern; U: undetermined pattern.

^£Obstructive pattern: FEV1/VC ratio below LLN; Restrictive pattern: TLC below LLN or FEV₁/VC ratio ≥ 85% and a reduced VC; mixed: FEV₁/VC ratio and TLC below LLN.

^¥Obstructive pattern: mild: FEV₁/FVC ratio < 70%, FEV₁ ≥ 80% of predicted, moderate: FEV₁/FVC ratio < 70%, FEV₁ ≥ 50%–< 80% of predicted, severe: FEV₁/FVC ratio < 70%, FEV₁ < 50% of predicted; restrictive pattern: FEV₁/FVC ratio ≥ 70% and FVC < 80% of predicted.

^$Obstructive pattern: FEV₁/FVC ratio ≤ 0.70 and normal, reduced, or increased FEV₁ and FVC percent predicted; restrictive pattern FEV₁/FVC ratio ≥ 0.75, FEV₁ and FVC < 75% of predicted; mixed: FEV₁/FVC ratio > 0.70 and < 0.75 FEV₁ and FVC < 75% predicted.