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. 2023 Aug 9;23:290. doi: 10.1186/s12890-023-02577-3

Table 3.

Spirometry parameters of Tet and control group before and after treatment

Tet Control P-Value
FVC (ml) Before administration 3222 ± 650 3272 ± 652 0.690
After administration 3301 ± 613 3185 ± 673 0.350
P -Value 0.021 0.00
Decline in FVC (ml) [M(P25, 75)] -40(-250, 70) 85(47.5, 153.8) 0.000
FEV 1 (ml) Before administration 2202 ± 492 2094 ± 742 0.690
After administration 2259 ± 514 1981 ± 747 0.030
P -Value 0.025 0.000
Decline in FEV 1 (ml) [M(P25, 75)] -40.0(-170.0, 60.0) 120.0(25.0, 172.5) 0.000
FEV 1 /FVC Before administration 69.33(63.68, 74.56) 64.57(54.13, 73.47) 0.450
After administration 68.93(63.28, 74.95) 61.05(51.56, 71.76) 0.003
P -Value 0.720 0.000
Decline in FEV 1 /FVC [M(P25,75)] 0.1(-1.39, 1.76) 1.75(-0.23, 3.45) 0.007
DLco% Before administration 68.45 ± 14.11 70.88 ± 18.11 0.528
After administration 65.50 ± 11.17 68.72 ± 16.98 0.283
P -Value 0.000 0.003

Twenty miners were missing spirometry parameters and were not included in the statistics presented. FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity. DLco: difusing capacity for carbon monoxide