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Table 2 Adjusted mean relative differences, compared to baseline BMI subgroup (BMI <25 kg/m2), between general practionners’ anthropometric measurements and the gold standard based on multiple linear regression model and compared with a nonparametric test for trend across ordered groups

From: Accuracy of anthropometric measurements by general practitioners in overweight and obese patients

Characteristics

Adjusted mean relative differences (%)a

p-value

95% CI

p-value for trend

Weight [kg]

 BMI subgroup

   

0.859

  25–29.9 kg/m2

0.46

0.002

0.17 to 0.75

 

   ≥ 30 kg/m2

0.91

<0.001

0.45 to 1.38

 

Height [cm]

 BMI subgroup

   

0.325

  25–29.9 kg/m2

0.11

0.16

−0.04 to 0.26

 

   ≥ 30 kg/m2

0.01

0.10

−0.18 to 0.18

 

BMI [kg/m2]

   

0.605

 BMI subgroup

    

  25–29.9 kg/m2

1.23

<0.001

0.71 to 1.74

 

   ≥ 30 kg/m2

2.23

<0.001

1.28 to 3.18

 

Waist circumference [cm]

   

0.077

 BMI subgroup

    

  25–29.9 kg/m2

3.59

<0.001

2.38 to 4.80

 

   > =30 kg/m2

6.69

<0.001

4.78 to 8.61

 

Hip circumference [cm]

   

0.242

 BMI subgroup

    

  25–29.9 kg/m2

2.58

<0.001

1.59 to 3.58

 

   ≥ 30 kg/m2

7.37

<0.001

5.85 to 8.90

 

Waist-to-hip ratio

   

0.002

 BMI subgroup

    

  25–29.9 kg/m2

5.45

<0.001

3.90 to 6.99

 

   ≥ 30 kg/m2

8.20

<0.001

6.30 to 10.11

 
  1. N = 509 participants measured by 26 GPs
  2. aUsing multiple linear regression, adjusting for visit (before/after training) and group (intervention/control)