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Table 2 Factors associated with the difference between measured and self-reported anthropometric data

From: Validation of obesity based on self-reported data in Spanish women participants in breast cancer screening programmes

Variables

Mean

Difference*

95%IC

p-value**

Measured IMC

   

   Underweight and Normal weight

0.59

0.50-0.69

 

   Overweight

1.17

1.09-1.26

 

   Obesity

2.03

1.88-2.19

< 0.001

Age

   

   45-49

0.98

0.83-1.12

 

   50-54

1.02

0.89-1.16

 

   55-59

1.32

1.19-1.45

 

   ≥ 60

1.48

1.36-1.59

0.013

Town size

   

   > 200,000

1.30

1.20-1.38

 

   200,000-10,000

1.17

1.06-1.28

 

   < 10,000

1.28

1.01-1.54

0.648

Marital status

   

   Single

1.28

1.02-1.53

 

   Married/stable couple

1.24

1.16-1.32

 

   Separated/divorced

1.19

0.97-1.41

 

   Widow

1.38

1.12-1.64

0.283

Menopause

   

   Pre-menopausal

0.97

0.83-1.11

 

   Post-menopausal

1.32

1.25-1.40

0.530

Educational level

   

   Up to junior school-leaving certificate

1.29

1.20-1.37

 

   Senior school-leaving certificate

1.34

1.11-1.58

 

   Vocational training

1.24

1.02-1.46

 

   University

0.93

0.77-1.10

0.014

Socio-economic level

   

   Very low/low social class

1.26

1.11-1.41

 

   Middle social class

1.25

1.17-1.33

 

   High/very high social class

1.11

0.89-1.34

0.188

Screening centre

   

   Corunna (La Coruña )

1.61

1.40-1.82

 

   Barcelona

1.23

1.06-1.40

 

   Burgos

0.72

0.54-0.90

 

   Palma de Mallorca

1.62

1.48-1.76

 

   Pamplona

1.59

1.41-1.77

 

   Zaragoza

0.58

0.42-0.73

 

   Valencia

1.20

1.03-1.37

< 0.001

  1. * Measured BMI - Self-reported BMI
  2. ** Data are adjusted by age and measured BMI