Table 7 Parameter estimates from multiple linear regression analyses for air trapping quantitative imaging measurements (n = 107)
From: Quantitative imaging analysis detects subtle airway abnormalities in symptomatic military deployers
Variable | Comparison group or increase | Parameter estimate [95% confidence interval] (p-value)* | ||
|---|---|---|---|---|
Change in E/I TLV ratio | Change in E/I MLD ratio | Change in LAA%-856 (%) | ||
Intercept | 0.4 [0.3, 0.6] | 0.7 [0.7, 0.8] | − 10.6 [− 20.6, − 0.6] | |
Deployer | Control | − 0.01 [− 0.2, − 0.06] (p < 0.0001) | − 0.05 [− 0.08, − 0.02] (p = 0.0008) | − 1.1 [− 4.4, 2.2] (p = 0.51) |
Male | Female | − 0.004 [− 0.05, 0.04] (p = 0.87) | − 0.002 [− 0.03, 0.02] (p = 0.90) | − 3.0 [− 6.2, 0.3] (p = 0.07) |
Age | + 1 year | 0.003 [0.001, 0.005] (p = 0.003) | 0.003 [0.002, 0.004] (p < 0.0001) | 0.1 [− 0.01, 0.3] (p = 0.07) |
Smoking pack− years | + 1 pack− year | − 0.0006 [− 0.002, 0.0008] (p = 0.39) | − 0.0001 [− 0.0009, 0.0006] (p = 0.73) | 0.07 [− 0.01, 0.2] (p = 0.09) |
BMI | + 1 kg/m2 | − 0.002 [− 0.006, 0.0007] (p = 0.13) | − 0.003 [− 0.005, − 0.0008] (p = 0.006) | − 0.2 [− 0.4, 0.05] (p = 0.13) |
TLV (expiratory) | + 1 L | – | – | 6.9 [4.7, 9.0] (p < 0.0001) |