Prevalence of obesity according to Edmonton staging in the Internal Medicine consultations. Results of the OBEMI study

Objectives: To estimate the prevalence of obesity in patients treated by departments of Internal Medicine and to classify the patients according to the Edmonton Obesity Staging System (EOSS).

Material and methods: An observational, descriptive cross-sectional study included outpatients older than 18 years, with a body mass index (BMI)>30, from 38 hospitals between the 1st and 14th of February, 2016. We classified the patients according to the EOSS and analysed their clinical, laboratory and demographic variables. A value of P<.05 was considered statistically significant.

Results: Of the 1,262 patients treated in consultations, we recruited 298 and analysed 265. The prevalence of obesity was 23.6%, the mean age was 62.47±15.27 years, and the mean BMI was 36.1±5.3kg/m². According to EOSS stage (0, 1, 2, 3 and 4), the prevalence was 4.9, 14.7, 62.3, 15.5 and 2.64%, respectively. Those patients with EOSS>2 were significantly older and had significantly more comorbidities. The multivariate analysis related age (OR 1.06; P<.0003), blood glucose (OR 1.04; P<.0006), total cholesterol (OR 0.98; P<.02) and uric acid (OR 1.32; P<.02) levels with an EOSS>2. An analysis of correspondence grouped, with an explanatory percentage of 78.2%, the patients according to their EOSS, comorbidity, education level, employment status and functional capacity.

Conclusions: The prevalence of obesity in the patients treated by Internal Medicine departments is similar to that of the general population, although the patients are older and have a higher BMI. EOSS is useful for implementing a comprehensive approach for patients with obesity, regardless of the BMI, which can help achieve better health and quality-of-life results.