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Table 2 Generalized linear mixed model of daily consumption of fruit and vegetables with fixed effects

From: A school based study of time trends in food habits and their relation to socio-economic status among Norwegian adolescents, 2001–2009

 

Daily fruit

Daily vegetables

 
 

Model 1

Model 2

Model 1

Model 2

 

Fixed effects

OR

95% CI

p-value

OR

95% CI

p-value

OR

95% CI

p-value

OR

95% CI

p-value

Intercept

0.47

0.43- 0.51

<.001

0.48

0.44-0.53

<.001

0.32

0.29-0.35

<.001

0.32

0.29-0.36

<.001

Female

1.82

1.71-1.94

<.001

1.72

1.53-1.95

<.001

1.46

1.36-1.57

<.001

1.43

1.26-1.62

<.001

Age?=?16

0.43

0.38-0.47

<.001

0.36

0.31-0.42

<.001

0.57

0.51-0.64

<.001

0.48

0.42-0.56

<.001

Age?=?15

0.62

0.56-0.69

<.001

0.59

0.52-0.68

<.001

0.67

0.61-0.75

<.001

0.67

0.57-0.77

<.001

Age?=?13

0.73

0.66-0.81

<.001

0.77

0.67-0.88

<.001

0.76

0.68-0.84

<.001

0.83

0.72-0.96

.011

2005 vs 2001

1.76

1.61-1.92

<.001

1.99

1.61-2.46

<.001

1.51

1.37-1.66

<.001

1.67

1.30-2.15

<.001

2009 vs 2005

0.97

0.89-1.06

.486

0.89

0.72-1.11

.312

1.01

0.92-1.11

.793

1.00

0.78-1.30

.977

SES

1.47

1.32-1.65

<.001

1.47

1.31-1.64

<.001

1.40

1.24-1.58

<.001

1.41

1.24-1.60

<.001

Female ’ age?=?16

   

1.34

1.10-1.62

.003

   

1.34

1.12-1.62

.002

Female ’ age?=?15

   

1.09

0.91-1.30

.346

   

1.02

0.84-1.24

.853

Female ’ age?=?13

   

0.92

0.77-1.10

.336

   

0.84

0.70-1.01

.060

Female ’ 2005/2001

   

0.94

0.81-1.10

.422

   

0.97

0.82-1.15

.676

Female ’ 2009/2005

   

1.07

0.91-1.25

.402

   

0.92

0.78-1.08

.291

Age?=?16 ’ 2005/2001

   

0.86

0.67-1.10

.238

   

0.92

0.70-1.21

.562

Age?=?15 ’ 2005/2001

   

0.96

0.75-1.22

.746

   

1.04

0.80-1.36

.757

Age?=?13 ’ 2005/2001

   

0.85

0.68-1.08

.183

   

0.93

0.72-1.22

.612

Age?=?16 ’ 2009/2005

   

0.96

0.74-1.24

.737

   

1.13

0.85-1.48

.406

Age?=?15 ’ 2009/2005

   

1.27

0.99-1.61

.054

   

1.19

0.92-1.53

.192

Age?=?13 ’ 2009/2005

   

1.20

0.94-1.52

.141

   

1.00

0.78-1.29

.989

SES ’ 2005/2001

   

0.99

0.77-1.27

.920

   

0.90

0.68-1.18

.436

SES ’ 2009/2005

  

0.91

0.69-1.22

.538

   

0.98

0.71-1.36

.905

 
  1. OR ’ odds ratio; CI ’ confidence interval; the reference group for gender was boys and for age 11’year olds.