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Table 3 Comparison of the clinical presentation outcomes, respiratory function tests, arterial blood gases, and the mean Karnofsky performance score for group A subgroups (main bronchi and lobar bronchi obstruction)

From: The value of endobronchial cryotherapy in the management of malignant endobronchial obstruction in patients with inoperable NSCLC: a prospective analysis of clinical and survival outcomes

Variable

Main bronchi (Group A1)

Lobar bronchi (Group A2)

P values I & II

P values I & III

P values II & IV

P valued III & IV

Pre-cryotherapy

(I)

(n=21)

Post-cryotherapy

(II)

(n=21)

Pre-therapy

(III)

(n=9)

Post therapy

(IV)

(n=9)

Clinical presentation

Cough

18(85.7%)

2(9.5%)

6(66.7%)

4(44.4%)

<0.001

0.232

0.028

0.343

Dyspnea

20(95.2%)

1(4.8%)

6(66.7%)

5(55.6%)

<0.001

0.128

0.001

0.629

Hemoptysis

21(100%)

0

9(100%)

0

<0.001

1.000

1.000

<0.001

Chest pain

8(38.1%)

3(14.3%)

4(44.4%)

3(33.3%)

0.079

0.745

0.232

0.629

Respiratory function tests

Mean FVC %

62.21±1.9

66.81±2.8

62.11±2.2

64.2±3.34

<0.001

0.906

0.049

0.137

Mean FEV1 %

64.33±3.5

71.11±3.8

64.69±3.8

67.34±3.6

<0.001

0.809

0.015

0.148

Mean 6MWT (m)

259±55

341±71

268±62

301±59

<0.001

0.709

0.121

0.264

Arterial blood gases

Mean PH

7.382±0.01

7.386±0.01

7.381±0.02

7.383±0.01

0.202

0.888

0.458

0.792

Mean So2

87.11±1.9

91.1±1.9

86.99±1.6

89.1±1.8

<0.001

0.860

0.011

0.018

Mean PaO2

77.12±1.9

84.2±2.2

76.97±2.1

80.4±1.9

<0.001

0.855

<0.001

0.002

Mean PaCo2

37.01±1.9

42.81±0.9

37.72±1.8

38.72±1.9

<0.001

0.339

<0.001

0.269

Mean Karnofsky performance score %

57.30±5.52

62.04±6.46

57.39±5.76

58.28±6.97

0.014

0.969

0.177

0.772