Table 1.

Characteristics of the Study Participant Donors of Cells for Single-Cell RNA-Sequencing Analysis

	Sex	Age, yr	Smoker Status	Pack-years	GOLD stage	FEV1%p	FVC%p	FEV1/FVC
Healthy
HC234	Female	77	Never	—	—	70	80	70
HC241	Male	55	Never	—	—	106	103	80
HC243	Female	75	Never	—	—	94	102	73
COPD
CA299	Female	85	Ex-smoker	71	2B	67	85	21
CA340	Male	67	Current	52	2B	72	104	12
CA342	Female	76	Ex-smoker	53	2A	54	66	4
CA381	Male	78	Current	58	2B	61	73	19

Definition of abbreviations: COPD = chronic obstructive pulmonary disease; FEV₁%p = FEV₁ percentage predicted (the volume of air that can be exhaled from the lungs in 1 second); FVC%p = FVC percentage predicted (the largest volume of air that can be exhaled after inhaling as deep as possible); GOLD = Global Initiative for Chronic Obstructive Lung Disease; Pack-years = packs smoked per day × years as a smoker.