BMC Primary Care

Table 1 Patient’s characteristics and Spirometry results

From: Practical surrogate marker of pulmonary dysanapsis by simple spirometry: an observational case–control study in primary care

	SUBJECTS (n = 25)			EMPHYSEMA (n = 55)			CONTROLS (n = 25)
Age, years	72.8	±	7.0^†	68.2	±	7.4	71.0	±	7.7
Height, cm	166.0	±	7.8	168.2	±	5.9	165.8	±	5.9
BMI, kg/mm²	22.7	±	2.7**	22.2	±	2.6^‡‡	26.0	±	3.8
BSA, mm²	1.7	±	0.2	1.7	±	0.1	1.8	±	0.2
VC, %pred	120.4	±	9.8**	125.2	±	9.8 ^‡‡	100.3	±	16.0
FVC, %pred	114.7	±	8.2**	119.4	±	8.1 ^‡‡	95.6	±	15.4
FEV1, %pred	106.1	±	7.1	105.4	±	5.8	101.5	±	13.8
FEV1/FVC, %	67.2	±	2.6**	65.6	±	3.2 ^‡‡	78.6	±	4.3
PEFR, %pred	99.6	±	13.8**	104.9	±	10.1	111.6	±	18.1
MMF, %pred	48.6	±	7.7** ^††	43.9	±	6.0 ^‡‡	76.2	±	19.8
V50/V25	4.6	±	1.46	4.38	±	1.11	4.21	±	1.22
ATI	4.61	±	3.7	4.52	±	2.96	5.22	±	2.94
MMF/FVC	0.37	±	0.05** ^††	0.33	±	0.05 ^‡‡	0.88	±	0.17

Values are mean ± SD. BMI, body mass index; BSA, body surface area; VC, vital
capacity; FVC, forced vital capacity; FEV1, forced expiratory volume in one second; PEFR, peak expiratory flow; MMF, maximal mid-expiratory flow; V50 and V25, Maximum expiratory flow rates at 50% and 25% of the FVC; ATI, air trapping index.
**Significantly different from CONTROLS (p < 0.01). ^††Significantly different from EMPHYSEMA (p < 0.01). ^†Significantly different from EMPHYSEMA (p < 0.05). ^‡‡Significantly different from CONTROLS (p < 0.01).

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