Table 2

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

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


* Measured BMI - Self-reported BMI

** Data are adjusted by age and measured BMI

Isidoro et al. BMC Public Health 2011 11:960   doi:10.1186/1471-2458-11-960

Open Data