Table 2.
Summary of spectral and Intrabreath oscillometry measurements
| Total cohort (n=89) | Subgroup with chest CT (n=26) | |||
| Absolute values | % predicted | Absolute values | % predicted | |
| R5 (cm H2O s/L) | 3.41 (1.26) | 114 (36) | 3.13 (0.72) | 110 (15) |
| R19 (cm H2O s/L) | 2.75 (0.96) | 99 (30) | 2.63 (0.64) | 96.99 (20) |
| R5–19 (cm H2O s/L) | 0.62 (0.63) | 245 (409) | 0.61 (0.45) | 253 (280) |
| X5 (cm H2O s/L) | −2.05 (1.15) | 172 (88) | −1.85 (1.17) | 159 (47) |
| X5in (cm H2O s/L) | −2.10 (1.09) | −2.06 (1.18) | ||
| X5ex (cm H2O s/L) | −1.96 (1.40) | −1.61 (1.18) | ||
| ΔX5 (cm H2O s/L) | −0.25 (0.50) | −0.30 (0.37) | ||
| AX (cm H2O/L) | 12.80 (12.80) | 413 (408) | 10.30 (11.70) | 365 (229) |
| Fres (Hz) | 21.29 (5.0) | 167 (48) | 20.10 (6.30) | 168 (37) |
| ReE (cm H2O s/L) | 2.98 (1.20) | 2.64 (0.96) | ||
| ReI (cm H2O s/L) | 2.17 (0.76) | 2.07 (0.53) | ||
| ReE-ReI (cm H2O s/L) | 0.69 (0.82) | 0.50 (0.82) | ||
| XeE (cm H2O s/L) | −0.24 (0.64) | −0.15 (0.60) | ||
| XeI (cm H2O s/L) | −0.66 (0.74) | −0.62 (0.63) | ||
| XeE-XeI (cm H2O s/L) | 0.38 (0.46) | 0.47 (0.51) | ||
Data are shown as median (IQR).
AX, reactance area between 5 Hz and Fres; ex, during expiration phase; Fres, resonance frequency; in, during inspiration phase; R5, resistance at 5 Hz; R19, resistance at 19 Hz, R5–19: R5–R19; ReE, resistance at end-expiration; ReI, resistance at end-inspiration; X5, reactance at 5 Hz; XeE, reactance at end-expiration; XeI, reactance at end-inspiration; ΔX5, difference of X5in and X5ex.