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25
26
FIGURE LEGENDS
Figure 1. Cumulative incidence of subacute pneumonia after radical esophagectomy.
Figure 2. Receiver operating characteristic curves for physical activity (steps/day) to predict
the development of pneumonia.
26
27
TABLES
Table 1. Patients characteristics
Pneumonia (+)
Pneumonia (-)
n = 10
n = 73
72.5 (62.0–76.0)
67.0 (60.0–71.0)
0.310
Female
2 (20.0)
16 (21.9)
1.000
Male
8 (80.0)
57 (78.1)
21.9 ± 2.6
22.1 ± 2.6
0.842
0 (0.0%)
0 (0.0%)
1.000
Normal
7 (70.0)
44 (60.3)
0.824
Risk for undernutrition
3 (30.0)
26 (35.6)
Undernutrition
0 (0.0)
3 (4.1)
2 (20.0)
9 (12.3)
0.615
1 (10.0)
15 (20.5)
0.376
1–399
0 (0.0)
10 (13.7)
≥ 400
9 (90.0)
48 (65.8)
4 (40.0)
34 (46.6)
p-value
Age (years)
Median (IQR)
Sex
Body mass index (kg/m2)
Mean ± SD
Performance status
≥2
Nutrition status
Sarcopenia
yes
Brinkman Index
Comorbidity
Hypertension
0.748
27
28
Diabetes
1 (10.0)
13 (17.8)
1.000
Cardiovascular disease
0 (0.0)
8 (11.0)
0.587
Pulmonary disease
1 (10.0)
4 (5.5)
0.483
%VC
98.0 ± 16.6
104.6 ± 13.2
0.216
FEV1%
72.1 ± 3.5
75.7 ± 7.3
0.172
Upper thoracic
1 (10.0)
7 (9.6)
0.526
Middle thoracic
7 (70.0)
33 (45.2)
Lower thoracic
2 (20.0)
26 (35.6)
Abdominal esophagus
0 (0.0)
7 (9.6)
Pulmonary Function Test
Location of tumor
Histology
Squamous
cell 10 (100.0)
65 (89.0)
0.587
carcinoma
Adenocarcinoma
0 (0.0)
8 (11.0)
1-2
4 (40.0)
35 (47.9)
3-4
6 (60.0)
38 (52.1)
Not administered
1 (10.0)
14 (19.2)
Chemotherapy
7 (70.0)
52 (71.2)
Chemoradiotherapy
2 (20.0)
7 (9.6)
6 (60.0)
53 (72.6)
Clinical stage
0.743
Neoadjuvant therapy
0.495
Intraoperative variables
Surgical approach
Thoracoscopy-assisted
0.465
28
29
Mediastinoscopy-
4 (40.0)
20 (27.4)
Two-field
2 (20.0)
21 (28.8)
Three-field
8 (80.0)
52 (71.2)
subcutaneous
2 (20.0)
3 (4.1)
retrosternal
7 (70.0)
57 (76.1)
posterior mediastinal
1 (10.0)
13 (17.8)
638.0 (501.0–712.0)
582.0 (512.0–672.0)
0.611
93.5 (77.0–208.5)
150.0 (74.0–310.5)
0.471
2.0 (2.0–5.5)
2.0 (2.0–4.0)
0.695
8.0 (8.0–9.0)
0.037
2.0 (2.0–2.0)
0.221
4.0 (4.0–6.0)
0.858
1,406.6 ± 311.4
0.835
assisted
Lymph node dissection
0.719
Reconstruction route
0.164
Operative time (min)
Median (IQR)
Blood loss (ml)
Median (IQR)
Postoperative outcomes
Postoperative
oxygenation (days)
Initiation of oral intake 12.0 (9.0–23.8)
(days)
Initiation of Ambulation 2.0 (2.0–2.0)
(days)
Chest
tube
removal 4.5 (3.0–8.5)
(days)
Total
energy
intake 1,384.6 ± 318.8
(kcal/day)
Physical
activity 1,479.5
(1,173.0– 2,848.0
(2,234.0– 0.013
29
30
(steps/day)
2,518.5)
4,268.0)
Albumin level (g/dl)
2.8 (2.7-2.9)
3.0 (2.7–3.10)
0.333
CRP level (mg/dl)
5.1 (2.6-9.0)
2.34 (1.1–4.9)
0.066
Recurrent nerve paralysis
3 (30.0)
21 (28.8)
1.000
Anastomotic leakage
3 (30.0)
14 (19.2)
0.420
Surgical site infection
2 (20.0)
17 (23.3)
1.000
Length of stay (days)
45.5 (31.0–60.5)
24.0 (18.0–36.0)
0.002
Data are expressed as n (%) unless otherwise specified. IQR, interquartile range; SD, standard
deviation; %VC, percentage of vital capacity; FEV1%, forced expiratory volume % in 1 s.
30
31
Table 2. Univariate and multivariate analyses on the impact of physical activity on
postoperative pneumonia
Variable (reference)
Univariate analysis
OR
95% CI
multivariate analysis
p-
OR
95% CI
value
pvalue
Physical activity (NPA)
LPA
12.20
2.82–
0.001
12.10
52.60
2.21–
0.004
65.90
Age (<70 years)
≥70 years
3.06
0.79–
0.106
1.37
11.90
Reconstruction
0.28–
0.698
6.81
route
(retrosternal)
subcutaneous
5.43
0.77–
0.090
3.92
38.30
posterior mediastinal
0.63
0.07–5.54 0.674
0.36–
0.260
42.20
0.75
0.07–
0.808
7.87
Recurrent nerve paralysis
31
32
(no)
yes
1.06
0.25–4.50 0.936
0.54
0.09–
0.504
3.35
CI, confidence interval; OR, odds ratio; NPA, normal physical activity; LPA, low physical
activity
32
...