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Table 3 Decomposition of the gap in generalized obesity, abdominal obesity and combined obesity(GO-AO) prevalence between the first and third tiles of socioeconomic status in Iranian children and adolescents: The CASPIAN V study

From: Socioeconomic inequality in different phenotypes of childhood obesity and its determinants in Iran: a Blinder-Oaxaca decomposition method

 

Generalized obesity only

Abdominal obesity only

Generalized obesity

Abdominal obesity

Both

Prevalence, % (95% CI)

 Prevalence in first tile

2.77 (2.21,3.33)

13.96 (12.85,15.08)

9.49 (8.6,10.39)

19.93 (18.71–21.15)

8.55 (7.62,9.48)

 Prevalence in third tile

3.40 (2.77,4.03)

14.53 (13.38,15.68)

12.77 (11.75,13.79)

22.73 (21.45,24.01)

11.81 (10.73,12.88)

 Differences (total gap)

-0.63 (-1.47,0.21)

-0.57 (-2.17,1.03)

-3.27 (-4.63,-1.92)

-2.80 (-4.57,-1.03)

-3.26 (-4.67,-1.84)

Due to endowments (explained), β (95% CI)

 PA

0.02 (-0.03,0.07)

-0.05 (-0.15,0.06)

0.06 (-0.01,0.14)

0 (-0.11,0.11)

0.06 (-0.02,0.14)

 Sex

0.03 (-0.01,0.06)

0 (-0.03,0.03)

0.04 (-0.03,0.11)

0.02 (-0.02,0.07)

0.03 (-0.03,0.1)

 ST

-0.02 (-0.06,0.01)

-0.01 (-0.08,0.05)

-0.06 (-0.12,0.01)

-0.04 (-0.11,0.03)

-0.05 (-0.11,0.01)

 Area of residence

-0.11 (-0.25,0.04)

-0.51 (-0.79,-0.23)

-0.94 (-1.18,-0.7)

-1.21 (-1.53,-0.88)

-1.05 (-1.31,-0.8)

 FH of obesity

-0.02 (-0.05,0.01)

0.01 (-0.05,0.07)

-0.12 (-0.2,-0.03)

-0.07 (-0.14,0.01)

-0.11 (-0.2,-0.02)

 Age

-0.03 (-0.07,0.02)

-0.01 (-0.04,0.02)

-0.01 (-0.03,0.01)

0.01 (-0.02,0.04)

0.02 (-0.02,0.06)

 Subtotal

-0.13 (-0.3,0.03)

-0.57 (-0.88,-0.26)

-1.01 (-1.29,-0.73)

-1.28 (-1.64,-0.93)

-1.1 (-1.4,-0.81)

Due to coefficients (unexplained), β (95% CI)

 PA

-0.16 (-1.4,1.08)

-0.95 (-3.23,1.34)

-0.52 (-2.51,1.47)

-1.03 (-3.57,1.52)

-0.44 (-2.47,1.58)

 Sex

0.7 (-0.14,1.54)

-0.35 (-1.93,1.23)

-0.58 (-1.93,0.78)

-1.38 (-3.15,0.39)

-1.35 (-2.76,0.06)

 ST

0.23 (-0.16,0.62)

-0.17 (-0.87,0.52)

0.41 (-0.21,1.04)

0.02 (-0.76,0.8)

0.25 (-0.39,0.9)

 Area of residence

1.22 (-1.16,3.6)

1.35 (-3.12,5.82)

-1.41 (-4.97,2.14)

-1.13 (-5.97,3.72)

-2.61 (-6.18,0.97)

 FH of obesity

0.33 (-0.27,0.92)

-0.24 (-1.32,0.84)

-0.16 (-1.13,0.8)

-0.57 (-1.8,0.66)

-0.41 (-1.42,0.61)

 Age

-2.47 (-5.86,0.91)

-1.36 (-7.75,5.02)

-3.51 (-8.71,1.69)

-2.62 (-9.57,4.32)

-2.51 (-7.91,2.89)

 Subtotal

-0.35 (-5.19,4.5)

1.72 (-7.28,10.73)

3.51 (-3.9,10.92)

5.2 (-4.65,15.05)

4.91 (-2.7,12.52)

  1. Only abdominal obesity: WHtR > 0.5 and 5th < BMI < 85th age sex specific percentile, Only generalized obesity: BMI > 95th age sex specific percentile and WHtR < 0.5 and Combined Obesity: BMI > 95th age sex specific percentile and WHtR > 0.5, SES socioeconomic statu, PA physical activity, FH family history, ST screen time
  2. * P ≤ 0.05 is considered as significant