I. Table 1

Distribution of values subsetted by outcome variable: complications at 30 days after surgery.

no
(N=68)		 yes
(N=16)		 Total
(N=84)
Age
Mean (SD) 64.8 (9.88) 63.4 (9.93) 64.6 (9.85)
Median [Min, Max] 64.0 [26.0, 85.0] 64.0 [48.0, 81.0] 64.0 [26.0, 85.0]
Sex
Male 57 (83.8%) 13 (81.3%) 70 (83.3%)
Female 11 (16.2%) 3 (18.8%) 14 (16.7%)
BMI
Mean (SD) 27.2 (5.39) 27.6 (4.60) 27.3 (5.23)
Median [Min, Max] 26.3 [16.6, 43.6] 27.1 [19.8, 38.0] 26.4 [16.6, 43.6]
Alcohol
No 24 (35.3%) 6 (37.5%) 30 (35.7%)
Yes 44 (64.7%) 9 (56.3%) 53 (63.1%)
Missing 0 (0%) 1 (6.3%) 1 (1.2%)
Smoking
Current 10 (14.7%) 5 (31.3%) 15 (17.9%)
Former 14 (20.6%) 6 (37.5%) 20 (23.8%)
Smokeless Tobacco 42 (61.8%) 4 (25.0%) 46 (54.8%)
Missing 2 (2.9%) 1 (6.3%) 3 (3.6%)
Race
White 54 (79.4%) 14 (87.5%) 68 (81.0%)
Black or African American 4 (5.9%) 1 (6.3%) 5 (6.0%)
Asian 2 (2.9%) 1 (6.3%) 3 (3.6%)
Other 8 (11.8%) 0 (0%) 8 (9.5%)
Neoadjuvant
no 18 (26.5%) 6 (37.5%) 24 (28.6%)
yes 49 (72.1%) 10 (62.5%) 59 (70.2%)
Missing 1 (1.5%) 0 (0%) 1 (1.2%)
Handsewn
no 49 (72.1%) 13 (81.3%) 62 (73.8%)
yes 19 (27.9%) 3 (18.8%) 22 (26.2%)
Circular Staples
no 47 (69.1%) 8 (50.0%) 55 (65.5%)
yes 21 (30.9%) 8 (50.0%) 29 (34.5%)
Linear Staples
no 34 (50.0%) 13 (81.3%) 47 (56.0%)
yes 34 (50.0%) 3 (18.8%) 37 (44.0%)
Esophagectomy Type
open 4 (5.9%) 0 (0%) 4 (4.8%)
Ivor Lewis 36 (52.9%) 12 (75.0%) 48 (57.1%)
McKewon 9 (13.2%) 1 (6.3%) 10 (11.9%)
transhiatal 19 (27.9%) 3 (18.8%) 22 (26.2%)

II. Exploration of differences by variable outcome between descriptors:

no
(N=68)		 yes
(N=16)		 P-value
Age
Mean (SD) 64.8 (9.88) 63.4 (9.93) 0.62
Median [Min, Max] 64.0 [26.0, 85.0] 64.0 [48.0, 81.0]
Sex
Male 57 (83.8%) 13 (81.3%) 1
Female 11 (16.2%) 3 (18.8%)
BMI
Mean (SD) 27.2 (5.39) 27.6 (4.60) 0.769
Median [Min, Max] 26.3 [16.6, 43.6] 27.1 [19.8, 38.0]
Alcohol
No 24 (35.3%) 6 (37.5%) 0.963
Yes 44 (64.7%) 9 (56.3%)
Missing 0 (0%) 1 (6.3%)
Smoking
Current 10 (14.7%) 5 (31.3%) 0.032
Former 14 (20.6%) 6 (37.5%)
Smokeless Tobacco 42 (61.8%) 4 (25.0%)
Missing 2 (2.9%) 1 (6.3%)
Race
White 54 (79.4%) 14 (87.5%) 0.496
Black or African American 4 (5.9%) 1 (6.3%)
Asian 2 (2.9%) 1 (6.3%)
Other 8 (11.8%) 0 (0%)
Neoadjuvant
no 18 (26.5%) 6 (37.5%) 0.592
yes 49 (72.1%) 10 (62.5%)
Missing 1 (1.5%) 0 (0%)
Handsewn
no 49 (72.1%) 13 (81.3%) 0.663
yes 19 (27.9%) 3 (18.8%)
Circular Staples
no 47 (69.1%) 8 (50.0%) 0.248
yes 21 (30.9%) 8 (50.0%)
Linear Staples
no 34 (50.0%) 13 (81.3%) 0.047
yes 34 (50.0%) 3 (18.8%)
Esophagectomy Type
open 4 (5.9%) 0 (0%) 0.393
Ivor Lewis 36 (52.9%) 12 (75.0%)
McKewon 9 (13.2%) 1 (6.3%)
transhiatal 19 (27.9%) 3 (18.8%)

II.1 Post Hoc Analysis

Analysis of the following variables:

  • Smoking
Dimension Value no yes
Current Residuals -1.636364 1.636364
Current p values 0.610000 0.610000
Former Residuals -1.523203 1.523203
Former p values 0.770000 0.770000
Smokeless Tobacco Residuals 2.609114 -2.609114
Smokeless Tobacco p values 0.050000 0.050000

III. Adjusting labels in Smoking

To explore smoking behaviors in the population we proceed to mutate the variable by merging former and current smokers into smokers versus smokeless tobbaco.

no
(N=68)		 yes
(N=16)		 P-value
Smoking
Smoker 24 (35.3%) 11 (68.8%) 0.02
Smokeless Tobacco 42 (61.8%) 4 (25.0%)
Missing 2 (2.9%) 1 (6.3%)

III.1 Post Hoc Analysis

Dimension Value no yes
Smoker Residuals -2.609114 2.609114
Smoker p values 0.040000 0.040000
Smokeless Tobacco Residuals 2.609114 -2.609114
Smokeless Tobacco p values 0.040000 0.040000