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

Table 3 Descriptive characteristics, focusing on the ratio of airway X-Ai to lung volume of the available study population who underwent CT analysis

Group	SUBJECTS (n = 10)			EMPHYSEMA (n = 21)			CONTROLS (n = 16)
Tr, WA, %	21.0	±	3.6	22.1	±	5.6	22.4	±	3.1
rB1 WA, %	52.1	±	5.1	49.1	±	5.0	49.6	±	4.4
rB7 WA, %	51.8	±	3.7	51.4	±	4.64	50.9	±	3.8
TrX-Ai/VC	44.8	±	11.5*	44.2	±	15.3 ^$$	61.3	±	20.3
Tr X-Ai /FVC	46.5	±	12.4*	45.6	±	15.9 ^$$	64.0	±	21.2
rB1X-Ai /VC	5.45	±	2.30*	6.05	±	2.05 ^$	8.0	±	2.3
rB1X-Ai /FVC	5.62	±	2.28*	6.23	±	2.09 ^$	8.3	±	2.5
rB7 X-Ai /VC	5.34	±	1.16	5.26	±	1.51 ^$	6.80	±	1.85
rB7X-Ai /FVC	5.52	±	1.1 2	5.43	±	1.58 ^$	7.09	±	1.92

Values are mean ± SD. Trachea; Tr, Wall area; WA, Right B1; rB1, Right B7; rB7, inner cross sectional luminal area at trachea; TrX-Ai, inner cross sectional luminal area at rB1; rB1 X-Ai, inner cross sectional luminal area at rB7; rB7 X-Ai.
* Significantly different from CONTROLS (p < 0.05).
^$Significantly different from CONTROLS (p < 0.05).
^$$Significantly different from CONTROLS (p < 0.01).

ISSN: 2731-4553