Table 4

Results of regression analyses (n = 112) on intentions to inspect feet and intentions to prescribe statins, with direct measures entered at Step 1 and the interaction between direct measures and trial group entered at Step 2.

Dependent variable

Independent variables

Step 1

Step 2

β

R

Adj R²

β

R² change

R²

Intention to inspect feet

Attitude

0.42***

-0.21

Subjective Norm (SN)

0.38***

0.97***

PBC

0.06

0.08

0.71***

0.48

Trial group × Attitude

0.72*

Trial group × SN

-0.65*

0.03*

0.51

Intention to prescribe statins

Attitude

0.09

Subjective Norm

0.67**

PBC

0.16

0.52***

0.25

0.02

0.27

*p < 0.05, **p < 0.01, ***p < 0.001. PBC = Perceived behavioural control. Control group coded '0; intervention group coded '1'.

Francis et al. Implementation Science 2008 3:50   doi:10.1186/1748-5908-3-50