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Table 2 Mean and median of Ca:P ratio, nutrients, food groups in the habitual diet and obesity diagnostic parameters according to education level, per capita income and practice of regular physical activity of adults of DISANDNT I/JP (2008-2010)

From: Association between obesity and calcium:phosphorus ratio in the habitual diets of adults in a city of Northeastern Brazil: an epidemiological study

Variables

Educational level 1

 

Per capita income 2

 

Regular physical activity 3

 
 

≤ High school

> High school

 

< Median

≥ Median

 

Yes

No

 
 

Mean

Median

Mean

Median

p-value

Mean

Median

Mean

Median

p-value

Mean

Median

Mean

Median

p-value

Ca:P ratio (mg:mg)

0.57

0.56

0.63

0.64

0.0006

0.55

0.53

0.61

0.61

0.0001

0.63

0.64

0.57

0.56

0.0110

Calcium* (mg)

522.19

453.10

653.39

529.20

0.0006

496.70

426.20

607.47

556.80

0.0002

609.01

569.05

540.26

475.70

0.0149

Phosphorus* (mg)

897.75

840.60

1028.2

906.10

0.0371

887.24

820.80

967.94

910.25

0.0411

957.56

904.00

921.24

840.65

0.1929

Dairy products (servings)4

1.01

0.79

1.61

1.31

0.0001

0.91

0.74

1.38

1.10

0.0001

1.38

1.21

1.09

0.83

0.0033

Meats (servings)3

1.82

1.53

1.68

1.31

0.067

1.89

1.58

1.69

1.41

0.0994

1.66

1.47

1.82

1.51

0.2322

BMI (kg/m2)

26.16

25.54

25.59

25.04

0.2472

26.16

25.20

25.98

25.86

0.8582

26.09

25.89

26.01

25.30

0.8024

WC (cm)

84.99

84.00

84.55

83.00

0.5845

84.25

83.00

85.46

85.00

0.1554

85.45

84.70

84.73

83.40

0.4801

WHtR (cm:cm)

0.54

0.51

0.51

0.50

0.0126

0.53

0.53

0.53

0.53

0.8506

0.53

0.52

0.53

0.53

0.4870

  1. 1 ≤ high school, corresponding to 12 or fewer years of schooling and > high school, corresponding to more than 12 years of schooling; 2 median of per capita income R$ 325.00 or US$ 580.29; 3 at least 150 minutes of physical activity per week [34]; 4 food consumption - servings (BRASIL. Ministério da Saúde. Guia Alimentar para a população brasileira, 2006 [39]/USDA. U.S. Department of Agriculture. Dietary Guidelines for Americans, 2010) [40].
  2. * Calcium and phosphorus - after adjustment for energy remained the same significant relationships.
  3. Abbreviations: Ca:P ratio Calcium:phosphorus ratio, BMI Body mass index, WC Waist circumference, WHtR Waist-to-height ratio.