Computer-assisted evaluation of small airway disease in CT scans of Iran-Iraq war victims of chemical warfare by a locally developed software: comparison between different quantitative methods

Table 3 Comparisons of QCT measurements between case and control groups

Variables	Case	Control	95% CI of mean difference^a		P-value^*
Variables	Mean ± SD	Mean ± SD	95% CI of mean difference^a		P-value^*
E/I ratio	0.85 ± 0.08	0.77 ± 0.05	0.05	0.11	< 0.001
ND E/I ratio	0.86 ± 0.56	1.23 ± 1.88	-1.20	0.45	0.365
AVI ratio	3.38 ± 1.33	3.87 ± 0.83	-1.06	0.08	0.092
PRM^Emph	0.10 ± 0.11	0.05 ± 0.02	0.02	0.09	0.002
%LAA_ins < -950	0.29 ± 0.08	0.27 ± 0.09	-0.01	0.06	0.152
PRM^Fsad	0.23 ± 0.08	0.16 ± 0.03	0.04	0.09	< 0.001
%LAA_Exp < -856	0.32 ± 0.13	0.21 ± 0.05	0.06	0.15	< 0.001
ATI	0.35 ± 0.15	0.24 ± 0.05	0.06	0.16	< 0.001

ISSN: 1471-2342