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Table 4 Parameters of the diffusing capacity for CO and NO

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
TLCO %pred 70 92.1 ± 16.7 89.8 (81.3; 102.2) 51 82.2 ± 14.2 83.2 (68.4; 92.9) 9.8 4.3 15.4 0.001
KCO %pred 70 98.6 ± 16.7 98.7 (89.0; 110.3) 51 101.8 ± 17.7 100.1 (89.3; 112.1) −3.2 −9.5 3.1 0.316
TLNO %pred 70 95.0 ± 17.4 94.1 (83.8; 106.2) 51 80.0 ± 14.8 79.6 (70.1; 92.1) 15.0 9.2 20.8 < 0.001
KNO %pred 70 102.7 ± 17.8 102.5 (93.3; 113.9) 51 100.0 ± 16.5 101.1 (87.4; 108.5) 2.7 −3.6 8.9 0.400
TLNO/TLCO 70 4.74 ± 0.34 4.67 (4.54; 4.92) 51 4.53 ± 0.29 4.52 (4.36; 4.65) 0.21 0.10 0.33 < 0.001
TLCHe/TLCpleth 70 0.834 ± 0.052 0.832 (0.798; 0.867) 51 0.806 ± 0.071 0.810 (0.755; 0.851) 0.028 0.005 0.052 0.018
Hb, mg/dl 53 13.9 ± 1.1 13.9 (13.2; 14.8) 48 13.7 ± 1.3 13.7 (12.8; 14.5) 0.2 −0.3 0.7 0.469
  1. Reference values were calculated according to van der Lee et al. [15]
  2. p-values below 0.05 are shown in bold