Table 7

Characteristics of subjects included and excluded from the analyses of pulmonary function

	n	Age (y)			Height (cm)		FVC (l)		FEV₁ (l)
	n	Mean	SD		Mean	SD	Mean	SD	Mean	SD
SD, standard deviation.
*Difference significant at p = 0.05.
†Difference significant at p = 0.01.
Group 1
Subjects included	94	47.3	7.4	*	153.2	4.8	2.71	0.31	2.33	0.26
Subjects excluded	85	44.0	7.7	*	154.2	5.1	2.67	0.35	2.30	0.28
Group 2
Subjects included	210	47.6	7.8	†	153.6	4.9	2.72	0.33	2.34	0.28
Subjects excluded	148	43.8	8.4	†	154.3	5.4	2.67	0.32	2.29	0.27
Group 3
Subjects included	102	46.1	8.4	*	153.2	4.6	2.67	0.30	2.33	0.23
Subjects excluded	94	43.5	8.6	*	154.1	4.9	2.63	0.30	2.28	0.28