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Table 2 Prevalence of body mass index categoriesa, by educational levelb and age groups

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

 

National

< 18 years

≥18 years

 

None,1st and 2nd cycle

3rd cycle and high school

Higher education

None,1st and 2nd cycle

3rd cycle and high school

Higher education

None,1st and 2nd cycle

3rd cycle and high school

Higher education

Obesity

n

592

435

169

26

85

34

566

350

135

\( \widehat{N} \)

1.115.485

797.234

325.902

27.695

77.245

28.749

1.087.790

719.989

297.153

weighted %c (95%CI)

38.5 [34.8–42.2]

17.1 [14.8–19.3]

13.2 [10.3–16.1]

13.0 [7.3–18.6]

9.9 [7.1–12.7]

4.8 [2.2–7.3]

40.6 [36.7–44.4]

18.5 [15.9–21.1]

15.9 [12.2–19.6]

standardized %d (95%CI)

38.3 [34.6–42.1]

16.9 [14.8–19.1]

13.1 [10.3–15.9]

13.0 [7.2–18.7]

9.8 [7.3–12.2]

4.6 [2.3–6.9]

40.4 [36.5–44.3]

18.4 [15.9–20.9]

15.8 [12.3–19.3]

Pre-obesity

n

611

786

426

53

161

118

558

625

308

\( \widehat{N} \)

1.124.068

1.612.171

759.117

55.865

152.021

120.569

1.068.204

1.460.150

638.548

weighted %c (95%CI)

38.8 [34.8–42.8]

34.5 [31.8–37.2]

30.7 [27.6–33.8]

26.2 [18–34.3]

19.5 [15.5–23.6]

20.0 [16.0–23.9]

39.8 [35.6–44.1]

37.5 [34.4–40.6]

34.2 [30.2–38.3]

standardized %d (95%CI)

39.2 [35.2–43.2]

34.7 [32.1–37.4]

30.9 [27.7–34.0]

26 [18.0–34.0]

19.1 [15.3–23.0]

20.4 [16.4–24.4]

40.3 [36.0–44.6]

37.9 [34.9–41.0]

34.2 [30.1–38.2]

Underweight/normal weight

n

436

1570

1119

159

822

680

277

748

439

\( \widehat{N} \)

656.053

2.262.101

1.385.222

130.035

548.491

455.011

526.018

1.713.609

930.211

weighted %c (95%CI)

22.7 [19.2–26.1]

48.4 [45.3–51.5]

56.1 [52–60.2]

60.9 [52.1–69.7]

70.5 [66.1–75.0]

75.3 [70.9–79.6]

19.6 [16.1–23.1]

44 [40.5–47.5]

49.9 [44.8–54.9]

standardized %d (95%CI)

22.5 [19.2–25.8]

48.3 [45.4–51.2]

56 [51.9–60.0]

61.0 [52.3–69.7]

71.1 [66.9–75.4]

75.0 [70.8–79.3]

19.3 [15.9–22.6]

43.7 [40.3–47.0]

50.0 [45.0–55.0]

p-valuee

p < 0.001

p = 0.004

p < 0.001

  1. n sample size, \( \widehat{N} \) estimated population size, 95%CI 95% confidence intervals
  2. aBMI categories defined according to the World Health Organization criteria
  3. bSubjects with missing value in education were excluded from analysis (n = 23)
  4. cPrevalence weighted for the distribution of the Portuguese population
  5. dPrevalence standardized for sex and age
  6. eP-value comparing the prevalence of obesity vs. the other categories