Table 4

Model efficacy to predict healthcare professionals' behaviours and intentions according to the methodological qualities of the studies

Characteristic of the studies

Number of

participants

(studies)

Frequency-

weighted mean

R2


Prediction of behaviour

Sample size

- N < 150

833 (12)

0.22

- N ≥ 150

1 279 (3)

0.38

Psychometric quality

- No information/poor values

1 119 (7)

0.31

- Complete information/good values

993 (8)

0.32

Behavioural measure

- Self-report

1 286 (4)

0.44

- Objective

826 (11)

0.13

Level of correspondence for intention-behaviour*

- Poor/unclear

546 (6)

0.10

- Good

1 566 (9)

0.39

Prediction of intention

Sample size

- N < 150

3 187 (34)

0.50

- N ≥ 150

11 799 (30)

0.61

Psychometric quality

- No information/poor values

3 112 (15)

0.47

- Complete information/good values

11 874 (49)

0.62


* The intention-behaviour correspondence was good for all self-reported measurements

Note: Because there were missing data in few publications, total differs from 16 and 72 studies for the behaviour and intention, respectively.

Godin et al. Implementation Science 2008 3:36   doi:10.1186/1748-5908-3-36

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