Prevalence of general and abdominal obesity in Portugal: comprehensive results from the National Food, nutrition and physical activity survey 2015–2016

Table 1 Prevalence of body mass index categories^a, for the national sample, by sex and age groups

	National	Women	Men	Children (< 10 years)	Adolescents (10–17 years)	Adults (18–64 years)	Elderly (65–84 years)
Obesity
n	1198	674	524	73	72	777	276
\( \widehat{N} \)	2.244.500	1.232.890	1.011.610	59.282	74.406	1.488.445	622.367
weighted % ^b	22.3%	24.3%	20.1%	7.7%	8.7%	21.6%	39.2%
95% CI	[20.5–24.0]	[21.9–26.7]	[17.5–22.7]	[4.6–10.9]	[5.5–12.0]	[19.5–23.8]	[34.2–44.2]
Pre-obesity
n	1830	830	1000	173	163	1181	313
\( \widehat{N} \)	3.506.169	1.553.537	1.952.632	132.074	200.559	2.509.942	663.594
weighted % ^b	34.8%	30.7%	38.9%	17.3%	23.6%	36.5%	41.8%
95% CI	[32.9–36.7]	[28.1–33.2]	[36.0–41.7]	[13.7–20.8]	[19.6–27.5]	[34.2–38.8]	[36.5–47.0]
Underweight/normal weight
n	3139	1704	1435	1217	457	1323	142
\( \widehat{N} \)	4.334.756	2.277.584	2.057.173	573.687	576.374	2.882.384	302.312
weighted % ^b	43.0%	45.0%	41.0%	75.0%	67.7%	41.9%	19.0%
95% CI	[40.7–45.2]	[42.0–48.0]	[37.9–44.1]	[70.8–79.1]	[63.3–72.1]	[39.2–44.5]	[14.1–24.0]
p-value ^c		p = 0.024		p < 0.001

n sample size, \( \widehat{N} \) estimated population size, 95%CI 95% confidence intervals
^aBMI categories defined according to the World Health Organization criteria
^bPrevalence weighted for the distribution of the Portuguese population
^cP-value comparing the prevalence of obesity vs. the other categories

ISSN: 1471-2458