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Table 4 Relationships of reporting refusal, measurement refusal, BMIsr under-reporting or over-reporting with various factors: odds ratio and 95% confidence interval (CI)

From: Self-reporting and measurement of body mass index in adolescents: refusals and validity, and the possible role of socioeconomic and health-related factors

 

Reporting refusal

Measurement refusal

BMIsr under-reporting (resulting in a change in BMI category)

BMIsr over-reporting (resulting in a change in BMI category)

 

ORga 95% CI

ORfm 95% CI

ORga 95% CI

ORfm 95% CI

ORga 95% CI

ORfm 95% CI

ORga 95% CI

ORfm 95% CI

N

1,559

 

1,559

 

1,326

 

1,244

 

Boys

0.75 0.44-1.28

0.79 0.54-1.14

1.47* 1.05-2.06

2.24† 1.36-3.70

4.22‡ 2.41-7.42

Age (yr)

1.03 0.84-1.28

1.31‡ 1.13-1.52

1.29‡ 1.10-1.50

1.00 0.87-1.14

0.77† 0.64-0.94

0.74† 0.60-0.91

Family structure

  Intact

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

  Parents divorced/separated and reconstructed family

1.22 0.64-2.34

1.59* 1.02-2.49

0.94 0.63-1.40

0.83 0.45-1.51

  Single parent and other situations

2.45† 1.25-4.82

3.68‡ 2.31-5.85

2.42‡ 1.52-3.85

1.24 0.73-2.10

1.89 0.98-3.63

2.47† 1.24-4.90

Father’s occupation

  Manager, professional, and intermediate professional

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

  Craftsman, tradesman, and firm head

1.56 0.74-3.29

1.12 0.63-1.97

0.62 0.38-1.00

0.55* 0.33-0.91

1.66 0.91-3.03

  Service worker and clerk

1.33 0.48-3.69

0.70 0.29-1.70

0.81 0.45-1.48

1.55 0.72-3.34

  Manual worker and other occupations

1.43 0.70-2.93

1.68* 1.04-2.71

0.78 0.51-1.19

0.53† 0.34-0.83

0.77 0.38-1.57

  Not working

2.25 0.90-5.63

3.60‡ 2.03-6.39

0.54 0.24-1.21

0.24† 0.10-0.60

1.60 0.63-4.09

Insufficient family income

1.26 0.66-2.42

1.63* 1.06-2.50

1.15 0.75-1.78

1.25 0.68-2.29

Low school performance (<10/20)

2.91† 1.45-5.86

2.87‡ 1.75-4.70

2.11† 1.24-3.59

1.02 0.52-1.97

1.42 0.58-3.44

Last-30 day substance use

  Tobacco

1.10 0.48-2.51

2.07† 1.29-3.33

0.97 0.55-1.69

0.70 0.27-1.78

  Alcohol

0.93 0.52-1.66

1.32 0.90-1.94

1.08 0.75-1.55

1.78* 1.08-2.95

  Cannabis

1.32 0.46-3.82

2.19† 1.19-4.02

0.81 0.36-1.83

1.13 0.39-3.28

  Hard drugs

0.63 0.09-4.71

2.05 0.88-4.79

0.94 0.32-2.72

0.50 0.07-3.79

Lack of regular physical/sports activity

2.14* 1.11-4.14

2.61‡ 1.66-4.11

1.97† 1.21-3.22

0.97 0.56-1.68

1.12 0.54-2.32

Having sustained violence

1.95* 1.10-3.46

2.68† 1.36-5.29

1.15 0.79-1.68

1.15 0.82-1.62

1.00 0.62-1.60

Victim of sexual abuse

1.45 0.43-4.82

1.64 0.75-3.61

1.71 0.78-3.76

1.48 0.44-5.01

Involvement in violence

1.04 0.59-1.83

0.52* 0.27-0.98

1.79† 1.17-2.73

1.52* 1.05-2.20

1.51* 1.02-2.23

1.24 0.74-2.06

WHOQOL ≤25th percentile value

  Physical health

1.68 0.95-3.00

1.67† 1.12-2.50

1.14 0.76-1.71

1.16 0.64-2.11

  Psychological health

2.18† 1.26-3.78

2.07‡ 1.41-3.04

1.60* 1.06-2.40

1.62† 1.12-2.34

1.65 0.97-2.81

  Social relationships

1.97* 1.14-3.40

1.32 0.89-1.96

1.08 0.74-1.57

0.68 0.37-1.24

  Living environment

1.41 0.79-2.50

2.17‡ 1.48-3.18

1.37 0.94-1.99

0.97 0.54-1.71

Measured body mass index (BMIm)

  Underweight

(1)

(2)

(2)

(1)

5.35† 1.80-15.9

9.96‡ 3.15-31.5

  Normal weight (reference)

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

  Overweight

0.85 0.39-1.86

(2)

(2)

10.7‡ 6.65-17.3

23.6‡ 12.1-45.8

0.82 0.46-1.46

0.38† 0.20-0.73

  Obese

0.68 0.20-2.30

(2)

(2)

11.0‡ 6.39-19.0

25.4‡ 12.3-52.4

(1)

  Measurement refusal

7.62‡ 4.03-14.4

8.82‡ 4.74-16.4

(2)

(2)

(2)

(2)

Weight perception

  Much too thin

8.63‡ 2.30-32.4

4.50* 1.13-5.29

1.28 0.28-5.77

2.97 0.93-9.42

9.88‡ 2.49-39.1

1.99 0.25-16.2

  A bit too thin

2.97† 1.29-6.86

1.12 0.58-2.14

1.00 0.55-1.84

7.13‡ 3.12-16.3

1.60 0.73-3.51

  Right (reference)

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

  A bit too fat

1.94 0.96-3.90

1.21 0.78-1.89

2.00‡ 1.37-2.92

3.17‡ 1.84-5.45

7.15‡ 3.97-12.9

  Much too fat

4.03† 1.51-10.8

2.41* 1.28-4.90

1.53 0.66-3.55

3.37* 1.21-9.40

19.6‡ 5.98-64.5

  1. *p < 0.05, †p < 0.01, ‡p < 0.001.
  2. BMI: Body mass index; BMIsr: self-reported BMI.
  3. ORga: gender-age-adjusted odds ratio; ORfm: odds ratios adjusted for all factors (full model).
  4. (1) Non computable. (2) Non concerned.