Research Article

Edmonton Obesity Staging System Prevalence and Association with Weight Loss in a Publicly Funded Referral-Based Obesity Clinic

Table 1

Edmonton Obesity Staging System (EOSS) study operational definitions.

EOSS stageConceptual EOSS definition
(Sharma and Kushner, 2009) [1]
Study operational definition

0No apparent obesity-related risk factors, physical symptoms, psychopathology, functional limitations, and/or impairments of well-beingNo EOSS factors reported

1Presence of obesity-related subclinical risk factors, mild physical symptoms, mild psychopathology, mild functional limitations, and/or impairment of well-beingAny of the following:
(i) Glucose ≥ 5.6 mmol/L
(ii) Cholesterol ≥ 5.2 mmol/L
(iii) Triglycerides ≥ 1.7 mmol/L
(iv) HDL ≤ 1.6 mmol/L
(v) LDL ≥ 3.3 mmol/L
(vi) SBP ≥ 130 mmHg
(vii) DBP ≥ 85 mmHg

2Presence of established obesity-related chronic disease, moderate limitations in activities of daily living, and/or well-beingAny of the following:
(i) Glucose ≥ 6.9 mmol/L
(ii) Diagnosed type 2 diabetes or type 2 diabetes medication
(iii) Cholesterol ≥ 6.2 mmol/L
(iv) Diagnosed hypercholesterolaemia
(v) Triglycerides ≥ 2.2 mmol/L
(vi) HDL ≤ 1.0 mmol/L
(vii) LDL ≥ 4.1 mmol/L
(viii) Diagnosed hyperlipidaemia or hyperlipidaemia medication
(ix) SBP ≥ 140 mmHg
(x) DBP ≥ 90 mmHg
(xi) Diagnosed hypertension or hypertension medication
(xii) Sleep apnea
(xiii) Gout
(xiv) Arthritis
(xv) Anxiety
(xvi) Atherosclerosis
(xvii) Fatty liver
(xviii) Congestive heart failure medication
(xix) Blood thinner medication
(xx) Depression

3Established end-organ damage, significant psychopathology, significant functional limitations, and/or impairment of well-beingAny of the following:
(i) Angina
(ii) Heart attack
(iii) Heart failure
(iv) Thrombosis
(v) Coronary artery disease
(vi) Coronary obstructive pulmonary disease
(vii) Dyspnea
(viii) Exercise dyspnea
(ix) Coronary artery bypass surgery
(x) Stroke

4Severe (potentially end-stage) disabilities from obesity-related chronic diseases, disabling psychopathology, functional limitations, and/or impairment of well-beingNo data on these factors available to evaluate this stage

HDL: high density lipoprotein; LDL: low density lipoprotein; SBP: systolic blood pressure; DBP: diastolic blood pressure.