Subset dataset keeping only patients who underwent PSG

We begin by subsetting patients who underwent Primary Sleeve Gastrectomy, out of the 834 available patient records we end up with 503. The following table shows the sociodemographic data available of the PSG subset.


Total
(N=503)
Sex
Male 108 (21.5%)
Female 395 (78.5%)
Age
Mean (SD) 47.0 (11.9)
Median [Min, Max] 47.0 [19.0, 78.0]
Race
White 407 (80.9%)
Black, African-American 79 (15.7%)
American or Alaskan Native 14 (2.8%)
Native Hawaiian 2 (0.4%)
Asian 1 (0.2%)
Ethnic
Hispanic 144 (28.6%)
Non-Hispanic 359 (71.4%)
Insurance
Yes 25 (5.0%)
No 478 (95.0%)


Preoperative Variables of Interest


Total
(N=503)
pH 24 Hr Monitoring
Yes 310 (61.6%)
No 193 (38.4%)
Demeester Score
Mean (SD) 5.54 (23.3)
Median [Min, Max] 0 [0, 272]
H.Pylori Positive or Not
Yes 440 (87.5%)
No 63 (12.5%)
Esophagitis
Yes 470 (93.4%)
No 33 (6.6%)
Barret´s
Yes 500 (99.4%)
No 3 (0.6%)
Preoperative BMI
Mean (SD) 45.0 (7.40)
Median [Min, Max] 43.4 [31.8, 76.7]
GERD
Yes 236 (46.9%)
No 267 (53.1%)


Post Operative Variables of Interest


Total
(N=503)
GERD at One Month
1 9 (1.8%)
2 61 (12.1%)
3 3 (0.6%)
4 152 (30.2%)
5 4 (0.8%)
6 160 (31.8%)
Missing 114 (22.7%)
GERD at Third Month
1 12 (2.4%)
2 68 (13.5%)
3 3 (0.6%)
4 135 (26.8%)
5 3 (0.6%)
6 133 (26.4%)
Missing 149 (29.6%)
GERD at Sixth Month
1 30 (6.0%)
2 41 (8.2%)
3 2 (0.4%)
4 101 (20.1%)
5 1 (0.2%)
6 107 (21.3%)
Missing 221 (43.9%)
GERD at Year
1 32 (6.4%)
2 33 (6.6%)
3 5 (1.0%)
4 62 (12.3%)
5 1 (0.2%)
6 75 (14.9%)
Missing 295 (58.6%)
Reflux at One Year
Yes 1 (0.2%)
No 119 (23.7%)
Missing 383 (76.1%)
Reflux at 2nd Year
Yes 0 (0%)
No 41 (8.2%)
Missing 462 (91.8%)