Table 2.

Summary of variables divided into perfect, substantial, and moderate agreement

	Variables	Perfect agreement 100%	Substantial agreement 75–99.9%	Moderate agreement 50–74.99%
Patient characteristics
1.	Nationality			X
2.	Patient ID no.	X
3.	Healthcare institution			X
4.	Hospital ID		X
5.	Initials			X
6.	Prefix			X
7.	Surname			X
8.	Date of birth	X
9.	Sex	X
10	Date of death			X
Prior bariatric history
11.	Hospital ID			X
12.	Prior metabolic or bariatric procedure		X
13.	Prior type of gastric bypass			X
14.	Prior type of malabsorptive procedure			X
15.	Prior type of other bariatric procedures			X
Screening
16.	Healthcare institution	X
17.	Hospital ID	X
18.	Date of consultancy		X
19.	Height	X
20.	Weight	X
21.	Hypertension (diagnosis)		X
22.	Diabetes mellitus (diagnosis)	X
23.	Details diabetes mellitus		X
24.	HbA1c (mmol/mol)			X
25.	Dyslipidemia			X
26.	GERD (diagnosis)			X
27.	OSAS (diagnosis)		X
28.	Osteoarthritis (diagnosis)		X
29.	Peripheral vascular disease/aneurysm aorta			X
30.	Liver disease			X
31.	Mobility			X
32.	Increased risk pulmonary Embolism			X
33.	PCOS			X
34.	Depression			X
35.	Smoking			X
Operation
36.	Healthcare institution	X
37.	Hospital ID	X
38.	Preoperative weight	X
39.	ASA classification			X
40.	Date of operation	X
41.	Surgical procedure (primary/two-stage/revision)		X
42.	Operative approach		X
43.	Bariatric procedure	X
44.	Surgeon ID			X
45.	Date of discharge			X
46.	Type of technique gastric band		X
47.	Fixation gastric band			X
48.	Type malabsorptive		X
49.	Type gastric bypass		X
50.	Biliopancreatic limb length			X
51.	Alimentary limb length			X
52.	Closure Petersen’s space		X
53	Closure hernia jejuno-jejunostomy		X
54.	Type gastric band (brand)			X
55.	Common limb length		X
56.	Bougie size		X
57.	Technique of pouch excision			X
58.	Distance from pylorus			X
59.	Details of other operation(s)	X
60.	Combined operation			X
61.	Suture material			X
62.	Ante-colic/retro-colic			X
Complication
63.	Healthcare institution	X
64.	Hospital ID	X
65.	Date of complication		X
66.	Period the complication occurred		X
67.	Date of re-admission			X
68.	Date of discharge after re-admission			X
69.	Type of (re)intervention			X
70.	Operative approach (re)intervention			X
71.	Patient status at discharge		X
72.	Gastrointestinal perforation		X
73.	Bleeding	X
74.	Splenic injury			X
75.	Source of bleeding			X
76.	Surgical complications	X
77.	Leak	X
78.	Post-operative complications		X
79.	Gastric complication			X
80.	Stricture			X
81.	Electrolyte disorder			X
82.	Hepatobiliary problems			X
83	CBD stones			X
84.	Band problems			X
85.	Pouch dilatation/band slippage			X
86.	Band erosion			X
87.	Port/band infection			X
88.	Other complications (including cardiac, pulmonary and other)		X
89.	Incisional hernia		X
90.	Intestinal obstruction		X
91.	Petersen’s hernia			X
92.	Malnutrition/enteral feeding			X
93.	Post-op vomiting/nausea			X
94.	Patient discharge to (home/revalidation center)			X
Follow-up
95.	Healthcare institution	X
96.	Hospital ID	X
97.	Date of follow-up	X
98.	Weight	X
99.	Hypertension status		X
100.	Medical treatment hypertension			X
101.	Diabetes mellitus status	X
102.	HbA1c (mmol/mol)			X
103.	Medical treatment diabetes mellitus	X
104.	Dyslipidemia status		X
105.	GERD status		X
106.	Medical treatment GERD			X
107.	OSAS status		X
108.	Medical treatment OSAS			X
109.	Osteoarthritis			X
110.	Medical treatment osteoarthritis			X
111.	Clinical malnutrition			X
112.	Vitamins and micro-elements intake			X

ID, identity document; HbA1c, hemoglobin A1c; GERD, gastroesophageal reflux disease; OSAS, obstructive sleep apnea syndrome; PCOS, polycystic ovary syndrome; ASA, American Society of Anesthesiologists; CBD stones, common bile duct stones

Adolescent section of the NBSR and the pre-operative work-up section of OGA are not included in the list of common data elements due to registration-specific variables