Table 2.

Chest expansion values and difference between the groups.

		Examiner A, first assessment		Examiner A, second assessment		Examiner B, first assessment		Examiner B, second assessment
		Upper CE (cm)	Lower CE (cm)	Upper CE (cm)	Lower CE (cm)	Upper CE (cm)	Lower CE (cm)	Upper CE (cm)	Lower CE (cm)
Healthy nonsmokers	Mean	5.6	7.0	5.6	7.2	6.1	7.2	6.4	7.5
	SD	1.8	2.0	1.5	1.8	1.7	1.9	1.7	2.0
	Variance	3.4	2.0	2.4	2.5	3.1	2.9	3.0	2.3
	Minimum	2.1	2.5	2.2	2.6	2.4	2.6	2.3	2.5
	Maximum	8.9	11	9.0	10.8	9.9	10.8	9.0	11.0
Healthy smokers	Mean	5.4	7.7	5.9	7.5	5.9	7.6	5.5	8.0
	SD	0.8	2.6	0.8	1.6	0.8	1.5	1.0	1.2
	Variance	0.7	2.0	0.7	2.6	0.7	2.3	1.0	1.6
	Minimum	4.1	6.0	5.0	5.0	5.0	5.0	4.1	6.0
	Maximum	7.3	10.3	8.0	11.0	7.7	11.0	7.9	10.8
COPD	Mean	3.7	4.9	4.2	4.8	4.3	5.2	4.4	4.7
	SD	0.8	1.4	1.0	1.8	1.3	2.2	1.6	2.6
	Variance	0.7	2.1	1.1	2.4	1.7	2.5	2.7	1.8
	Minimum	1.8	2.1	1.6	2.2	1.8	2.2	2.0	2.1
	Maximum	4.9	8.0	5.8	7.8	6.2	8.6	6.3	7.4
p value		<0.001	<0.001	<0.001	<0.001	0.001	<0.001	0.040	0.011