Correction to: “Liuzijue” Qigong training enhances early pulmonary function recovery after esophageal cancer surgery

Table 1 Comparative analysis of postoperative pulmonary function and exercise capacity assessments across study groups of esophageal cancer patients, mean ± SD

Variable	Overall (n = 306)	Control group (n = 163)	Experimental group (n = 143)	P value
Forced vital capacity	3094.4 ± 841.4	3013.3 ± 813.6	3265.4 ± 861.3	0.115
FEV1	2734.4 ± 727.9	2066.1 ± 740.5	2270.8 ± 797.2	0.021
FEV1 to forced vital capacity ratio	85.6 ± 10.1	86.0 ± 9.3	85.1 ± 10.7	0.418
Diffusing capacity of the lung for carbon monoxide	17.1 ± 5.9	17.0 ± 5.9	17.1 ± 5.9	0.880
Maximum voluntary ventilation	100.4 ± 35.6	101.9 ± 35.7	99.1 ± 35.5	0.507
Total lung capacity	5624.4 ± 1106.5	5626.8 ± 1106.1	5622.3 ± 1110.3	0.972
Functional residual capacity	2976.4 ± 592.8	2960.7 ± 578.2	2990.1 ± 606.8	0.664
6-minute walk distance	404.2 ± 14.6	403.4 ± 15.0	404.9 ± 14.2	0.379
Modified Borg scale	2 (0-4)	2 (0-4)	2 (1-3)	0.045

Table 2 Comparison of changes in pulmonary function and functional indicators in esophageal cancer patients during the perioperative period between groups, mean ± SD

Variable	Overall (n = 306)	Control group (n = 163)	Experimental group (n = 143)	P value
∆Forced vital capacity	408.5 ± 93.0	502.1 ± 35.0	326.5 ± 26.7	< 0.001a
∆FEV1	559.3 ± 152.5	701.7 ± 47.1	434.4 ± 90.8	< 0.001a
∆FEV1 to forced vital capacity ratio	4.4 ± 19.9	3.5 ± 19.3	5.3 ± 20.4	0.435
∆Diffusing capacity of the lung for carbon monoxide	2.7 ± 1.8	2.8 ± 1.8	2.6 ± 1.8	0.305
∆Maximum voluntary ventilation	16.8 ± 11.1	19.4 ± 11.7	14.4 ± 10.1	< 0.001a
∆Total lung capacity	340.0 ± 699.8	378.2 ± 726.7	306.4 ± 675.8	0.371
∆Functional residual capacity	-739.6 ± 733.4	-717.3 ± 731.9	-759.2 ± 736.4	0.619
∆6-minute walk distance	45.0 ± 12.6	45.0 ± 12.5	44.9 ± 12.7	0.896
∆Modified Borg scale	-1.0 (-2 to 1)	-1.0 (-2 to 1)	-1.0 (-2 to 1)	0.815

^aP < 0.05.