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Table 2 Schoolchildren estimates (proportion and 95% CI) by MESA levels in three years of WebCAAFE research

From: Development and application of the Meal and Snack Assessment (MESA) quality scale for children and adolescents using item response theory

Variables

Scale Levels

Healthy 18.3% (17.4–19.4)

Mixed 40.6% (39.0–42.3)

Unhealthy 41.0% (39.5–42.5)

Survey year (N = 6,372)

%

95%CI

%

95%CI

%

95%CI

 2013

18.7

17.1–20.5

40.3

37.4–43.3

41.0

38.6–43.4

 2014

18.3

16.8–19.8

40.9

37.9–44.0

40.8

37.7–44.0

 2015

18.1

16.2–20.2

40.7

37.7–43.7

41.2

38.6–43.8

Sex (N = 6,372)

 Boys

17.7

16.2–19.4

38.9

36.8–41.1

43.3

41.5–45.2d

 Girls

19.0

17.2–20.9

42.3

40.1–44.7

38.7

36.7–40.8d

Age (N = 6,346)

 7–9 years old

19.0

17.7–20.4

42.2

40.1–44.3

38.8

36.9–40.8d

 10–12 years old

17.2

15.5–19.1

38.2

36.0–40.4

44.6

42.7–46.5d

Family income (N = 6,372)

 1º tertile

18.8

17.1–20.7

42.7

40.1–45.5

38.4

35.9–41.0d

 2º tertile

18.2

16.3–20.2

40.6

37.6–43.7

41.2

38.9–43.6

 3º tertile

17.9

16.0–19.9

37.7

35.2–40.3

44.4

41.6–47.2d

School shift (N = 6,238)

 Morning

19.2

18.2–20.3

39.0

36.6–41.5

41.8

39.6–44.1

 Afternoon

17.5

15.8–19.4

42.3

40.1–44.5

40.2

38.1–42.3

Weight status WHOa (N = 6,372)

 Non-overweight, BMI Z-score for age <  + 1

18.1

16.8–19.5

40.8

39.2–42.5

41.0

39.4–42.7

 Overweight (including obesity), BMI Z-score for age ≥  + 1

18.8

17.2–20.4

40.3

37.2–43.3

41.1

38.5–43.6

Day of food intake report (N = 6,372)

 Non-school days

17.0

14.9–19.3

39.0

35.4–42.7

44.0

40.6–47.5

 School days

18.8

17.7–20.0

41.2

39.5–42.9

40.0

38.6–41.4

Frequency of school meal consumption (N = 5,462)

 0–1 times/week

16.7

14.3–19.4

36.8

33.4–40.3d

46.5

43.5–49.5d

 2–3 times/week

18.0

15.6–20.7

42.2

39.3–45.1

39.8

36.4–43.3d

 4–5 times/week

19.1

17.5–20.8

44.6

42.2–47.0d

36.4

34.5–38.2d

Physical Activity Scoreb (N = 6,372)

 1º tertile

22.5

20.1–25.0d

33.5

30.8–36.3d

44.0

40.7–47.4d

 2º tertile

18.6

17.1–20.3d

39.0

36.8–41.1d

42.4

40.2–44.6d

 3º tertile

13.6

11.7–15.8d

50.1

46.9–53.3d

36.3

33.4–39.2d

Screen activityc(N  = 6,372)

 1º tertile

22.0

20.5–23.6d

41.4

39.5–43.4

36.5

34.6–38.6d

 2º tertile

18.6

16.5–20.9d

38.7

36.2–41.2

42.7

40.7–44.8d

 3º tertile

11.7

10.1–13.5d

42.2

39.3–45.2

46.1

43.1–49.0d

  1. CI Confidence Interval, WebCAAFE Food Intake and Physical Activities of Schoolchildren, MESA Meal and Snack Assessment Quality Scale, N total number of subjects
  2. aBody mass index (BMI) was computed as weight (kg) divided by height squared (m). Age- and sex-specific BMI z-scores were calculated according to the World Health Organization [28]
  3. bPhysical activity score (PAS): created by multiplying the metabolic equivalent of each physical activity by the daily frequency reported [20]. The subject's PAS was the sum of all activity scores The first tertile was defined as the lowest, the second tertile as the intermediary, and the third tertile as the highest
  4. cDaily frequency of sedentary behaviors based on screen activities (television, videogame, computer, tablet, cell phone). The first tertile was defined as the lowest, the second tertile as the intermediary, and the third tertile as the highest
  5. dStatistical significance with the help of the confidence interval (non-overlapping confidence interval)