Table 1A

Subject characteristics with and without visually detected emphysema

	Absent				Present				T-test
	N	M	SD	Range	N	M	SD	Range	P value
Age (year)	563	57.3	4.5	50–65	47	59.2	4.2	51–65	0.004
Weight (kg)	563	80	16	43–146	47	81	17	53–121	NS
Height (cm)	563	171	9	146–199	47	172	10	158–194	NS
BMI (kg/m²)	563	27	5	17–45	47	27	4	18–36	NS
TLC (CTV) (L)	493	5.3	1.3	2.3–10.1	40	6.0	1.5	4.0–10.0	0.006
VC (L)	561	4.0	0.9	2.1–6.5	46	3.9	1.1	1.9–7.3	NS
VC (% pred)	561	110	15	66–154	47	107	16	60–143	NS
FEV₁ (L)	561	3.1	0.70	1.55–5.35	47	2.7	0.91	0.99–5.35	0.006
FEV₁ (% pred)	561	107	14	65–152	47	93	22	30–138	<0.0001
D_L,CO (mmol min^-1 kPa^-1)	530	8.12	1.61	4.47–14.66	45	7.16	2.20	2.64–12.82	0.006
D_L,CO (% pred)	526	91	13	54–170	43	81	20	29–134	0.001
RV −950 (%)	493	1.9	1.9	0–11	40	2.8	4.3	0–23	NS
Pack-years	517	9.9	12.8	0–86	44	27.6	16.0	0–66	<0.0001
r_AiDA (µm)	563	291	36	214–428	47	326	48	266–516	0.00001