Table 5.

Results of multinomial logistic regression for the association between the number of noncommunicable diseases (NCDs) related to obesity treated with medications and BMI classification (n = 59,402).

BMI classificationa	Number of NCDs related to obesity treated with medications
	Crude relative risk				Adjusted relative riskb
	1	95%CI	≥ 2	95%CI	1	95%CI	≥ 2	95%CI
Normal weight	Reference		Reference		Reference		Reference
Underweight	0.79	0.60–1.04	0.72	0.50–1.05	0.78	0.58–1.06	0.63	0.41–0.96
Overweight	1.71	1.57–1.86	2.08	1.83–2.35	1.41	1.29–1.55	1.66	1.46–1.89
Obesity I	2.30	2.06–2.57	3.65	3.16–4.22	1.77	1.57–2.00	2.68	2.29–3.12
Obesity II	2.66	2.24–3.16	5.19	4.21–6.40	2.26	1.88–2.72	4.44	3.54–5.56
Obesity III	3.48	2.64–4.59	5.94	4.44–7.95	3.03	2.21–4.15	5.53	3.81–8.02

National Health Survey, Brazil, 2013.

^aUnderweight: BMI < 18.5 kg/m². Normal weight: BMI 18.5–24.9 kg/m². Overweight: BMI 25.0–29.9 kg/m². Obesity I: BMI 30.0–34.5 kg/m². Obesity II: BMI 35.0–39.9 kg/m^2. Obesity III: BMI ≥ 40 kg/m².

^bModel adjusted by region, area, sex, age and education.