. 2019 Sep 18;55(1):206–213. doi: 10.1002/ppul.24517

Table 3.

Pulmonary function parameters as percent of predicted or z‐score comparing age group; all results presented as median (Q1; Q3)

	Group 8 (n = 25)	Group 15 (n = 22)	P value
TLC (% pred ^a )	100.44 (96.12; 109.67) NA = 13	94.49 (85.15; 102.81) NA = 2	.15
FEV1 (% pred ^a )	82.58 (71.25; 89.61) NA = 3	75.67 (65.83; 93.27) NA = 2	.497
FEV1 (% pred ^b )	88.84 (75.65; 96.03) NA = 2	73.14 (64.57; 94.36) NA = 2	.108
FEV1 (z‐scores ^b )	−0.90 (−2.00;−0.34)	−2.26 (−2.93; −0.47)	.093
FEV1/FVC (% pred ^b )	98.62 (91.31; 106.34) NA = 2	95.32 (87.14; 105.15) NA = 2	.381
FEV1/FVC (z‐scores ^b )	−0.23 (−1.17; 1.12) NA = 2	−0.69 (−1.60; 0.76) NA = 2	.342
FEV1/VC (% pred ^a )	98.02 (92.78; 101.83) NA = 2	96.06 (88.02; 105.14) NA = 2	.472
FVC (% pred ^c )	81.90 (70.91; 101.18) NA = 2	93.13 (75.36; 103.49)	.364
FVC (% pred ^b )	86.39 (74.58; 99.23) NA = 2	83.93 (70.49; 93.85)	.401
FVC (z‐scores ^b )	−1.11 (−2.12; −0.06) NA = 2	−1.37 (−2.58; −0.54)	.276
X5 (% pred ^d )	96.16 (84.22; 119.30) NA = 3	141.51 (92.94; 182.18) NA = 3	.028^*
R5 (% pred ^d )	117.31 (105.53; 123.01) NA = 3	116.67 (105.13; 151.21) NA = 4	.605
R20 (% pred ^d )	111.18 (103.40; 122.87) NA = 2	115.87 (103.61; 155.62) NA = 4	.198
Resonant fr (% pred ^d )	122 (113; 134) NA = 2	118.90 (106.72; 154.57) NA = 4	.733
D_LCOc (% pred ^e )	96.05 (92.92; 110.35) NA = 11	90.47 (81.65; 98.98) NA = 1	.064
D_LCOc (z‐scores ^e )	−0.22 (−0.41; 0.59) NA = 11	−0.63 (−1.39; −0.07) NA = 1	.051

Abbreviations: D_LCO, diffusing capacity of the lungs for carbon monoxide; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; R, resistance; TLC, total lung capacity; X, reactance.

^{^a}

Solymar et al.23

^{^b}

GLI.13

^{^c}

Polgar and Promadhat,24 Quanjer et al.25

^{^d}

Nowowiejska.14

^{^e}

GLI.15

statistical significance.