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Table 4 Random-effects average correlation and heterogeneity statistics by age of participants

From: The theory of planned behaviour and discrete food choices: a systematic review and meta-analysis

 

≤17

18-29

≥30

Association

n

k

r +

I 2

n

k

r +

I 2

n

k

r +

I 2

Attitude-intention

6238

8

0.46

93.13

3149

9

0.41

71.52

3583

11

0.55

92.82

SN-intention

6238

8

0.35

95.69

3149

9

0.32

85.62

3583

11

0.33

82.86

PBC-Intention

6238

8

0.41

95.63

3149

9

0.55

95.50

3583

11

0.45

91.62

PBC-Behaviour

5975

6

0.21

92.39

3213

10

0.34

89.07

3475

10

0.35

91.70

Intention-Behaviour

6309

10

0.26

92.68

3213

10

0.42

74.86

3576

11

0.44

89.08

  1. n = number of participants, k = number of effect sizes included in the analysis, CI = 95 % confidence interval, I 2 = tests of heterogeneity, r +  = random effects average correlation. NB Restricted to health promoting food choice behaviours only