A patient-centered electronic tool for weight loss outcomes after Roux-en-Y gastric bypass.
BACKGROUND. Current patient education and informed consent regarding weight loss expectations for bariatric surgery candidates are largely based on averages from large patient cohorts. The variation in weight loss outcomes illustrates the need for establishing more realistic weight loss goals for individual patients. This study was designed to develop a simple web-based tool which provides patient-specific weight loss expectations. METHODS. Postoperative weight measurements after Roux-en-Y gastric bypass (RYGB) were collected and analyzed with patient characteristics known to influence weight loss outcomes. Quantile regression was used to create expected weight loss curves (25th, 50th, and 75th %tile) for the 24 months after RYGB. The resulting equations were validated and used to develop web-based tool for predicting weight loss outcomes. RESULTS. Weight loss data from 2986 patients (2608 in the primary cohort and 378 in the validation cohort) were included. Preoperative body mass index (BMI) and age were found to have a high correlation with weight loss accomplishment (P < 0.0001 for each). An electronic tool was created that provides easy access to patient-specific, 24-month weight loss trajectories based on initial BMI and age. CONCLUSIONS. This validated, patient-centered electronic tool will assist patients and providers in patient teaching, informed consent, and postoperative weight loss management.
Geisinger Obesity Research Institute, Geisinger Clinic, Danville, PA 17822, USA.
G Craig
0000-0002-6015-9692
GC
Wood
Geisinger Obesity Research Institute, Geisinger Clinic, Danville, PA 17822, USA.
Peter
0000-0002-5948-5239
P
Benotti
Institute of Personalized Medicine, Penn State University College of Medicine, Hershey, PA 17033, USA.
Glenn S
GS
Gerhard
Department of Computer Science, Bucknell University, Lewisburg, PA 17837, USA.
Elaina K
EK
Miller
Department of Computer Science, Bucknell University, Lewisburg, PA 17837, USA.
Yushan
0000-0002-3378-8522
Y
Zhang
Department of Computer Science, Bucknell University, Lewisburg, PA 17837, USA.
Richard J
RJ
Zaccone
Geisinger Obesity Research Institute, Geisinger Clinic, Danville, PA 17822, USA ; Weis Center for Research, Geisinger Clinic, Danville, PA 17822, USA.
George A
GA
Argyropoulos
Department of Surgery, Geisinger Clinic, Danville, PA 17822, USA.
Anthony T
AT
Petrick
Geisinger Obesity Research Institute, Geisinger Clinic, Danville, PA 17822, USA ; Department of Gastroenterology, Geisinger Clinic, Danville, PA 17822, USA.
Christopher D
CD
Still
D000124:Achievement; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D015992:Body Mass Index; D001835:Body Weight; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D015390:Gastric Bypass / Q000523:psychology; D006040:Goals; D006801:Humans; D007258:Informed Consent; D020407:Internet; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000523:psychology / Q000601:surgery*; D010353:Patient Education as Topic / Q000379:methods*; D011184:Postoperative Period; D016896:Treatment Outcome; D015431:Weight Loss; D055815:Young Adult