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
Never 10 (14.7%) 5 (31.3%) 15 (17.9%)
Current 14 (20.6%) 6 (37.5%) 20 (23.8%)
Former 42 (61.8%) 4 (25.0%) 46 (54.8%)
Smokeless Tobacco 1 (1.5%) 0 (0%) 1 (1.2%)
Missing 1 (1.5%) 1 (6.3%) 2 (2.4%)
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
Never 10 (14.7%) 5 (31.3%) 0.067
Current 14 (20.6%) 6 (37.5%)
Former 42 (61.8%) 4 (25.0%)
Smokeless Tobacco 1 (1.5%) 0 (0%)
Missing 1 (1.5%) 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
Never Residuals -1.666912 1.666912
Never p values 0.760000 0.760000
Current Residuals -1.557451 1.557451
Current p values 0.950000 0.950000
Former Residuals 2.540986 -2.540986
Former p values 0.090000 0.090000
Smokeless Tobacco Residuals 0.476072 -0.476072
Smokeless Tobacco p values 1.000000 1.000000

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
Never 10 (14.7%) 5 (31.3%) 0.231
Smoker 56 (82.4%) 10 (62.5%)
Smokeless Tobacco 1 (1.5%) 0 (0%)
Missing 1 (1.5%) 1 (6.3%)

III.1 Post Hoc Analysis

Dimension Value no yes
Never Residuals -1.666912 1.666912
Never p values 0.570000 0.570000
Smoker Residuals 1.494311 -1.494311
Smoker p values 0.810000 0.810000
Smokeless Tobacco Residuals 0.476072 -0.476072
Smokeless Tobacco p values 1.000000 1.000000