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Table 3 Body plethysmographic parameters

From: Heterogeneous pattern of differences in respiratory parameters between elderly with either good or poor FEV1

Parameter UED group LED group Mean difference (UED-LED) 95% CI of difference p-value for difference
Number Mean ± SD Median (25%; 75%) Number Mean ± SD Median (25%; 75%) Lower Upper
TLCpleth %pred 72 113.2 ± 11.9 115.9 (104.8; 122.2) 51 102.3 ± 12.4 102.6 (94.4; 112.2) 10.9 6.5 15.4 < 0.001
RV %pred 72 94.4 ± 16.7 96.6 (82.9; 103.5) 51 99.7 ± 18.5 102.5 (92.1; 110.5) −5.3 −11.8 1.1 0.104
RV/TLCpleth %pred 72 84.9 ± 9.4 85.2 (78.1; 91.7) 51 98.9 ± 11.9 98.0 (91.2; 108.0) −14.0 − 18.0 − 10.0 < 0.001
ITGV %pred 72 99.7 ± 18.8 100.4 (85.8; 110.2) 51 101.3 ± 19.5 101.1 (86.2; 118.0) −1.6 −8.5 5.4 0.656
ITGV/TLCpleth %pred 72 83.8 ± 9.0 83.1 (76.8; 89.9) 51 94.1 ± 10.4 93.8 (86.9; 102.1) −10.3 − 13.9 −6.7 < 0.001
GAW %pred 72 125.7 ± 40.1 121.0 (97.8; 145.3) 51 77.2 ± 36.1 70.2 (52.0; 97.6) 48.6 34.8 62.3 < 0.001
sGAW %pred 72 138.4 ± 42.1 134.6 (112.8; 153.2) 51 88.3 ± 47.7 84.2 (62.3; 107.7) 50.0 33.5 66.5 < 0.001
  1. Reference values were calculated according to Koch et al. [14]
  2. p-values below 0.05 are shown in bold