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Table 2 Summary of regression analyses for the three disclosure behaviours with intention as dependent variable.

From: The development of a theory-based intervention to promote appropriate disclosure of a diagnosis of dementia

Behaviour Model Variables predicting intention Standardised regression coefficient Change in R2(%)
Explore what patient already knows or suspects (n = 373) TPB constructs Subjective norm 0.424 23.5***
   Perceived behavioural control 0.161 4.0***
   Emotional attitude 0.094 1.1*
   Attitude 0.098 0.8*
   Total R 2   29.4
  SCT constructs Self efficacy 0.417 22.0***
   Outcome expectancies 0.158 2.2**
   Total R 2   24.2
  Team variables Perceived reliability of colleagues 0.384 13.1***
   Perceived role 0.140 1.2**
   Number of professional groups -0.113 1.2*
   Total R 2   15.5
  Combined constructs Subjective norm 0.334 23.5***
   Perceived behavioural control 0.213 4.0***
   Perceived reliability of colleagues 0.252 4.6***
   Outcome expectancies 0.145 1.9**
   Number of professional groups responsible for behaviour -0.128 1.6**
   Total R 2   35.6
Use explicit terminology (n = 366) TPB constructs Subjective norm 0.407 38.8***
   Attitude 0.374 13.1***
   Emotional attitude 0.143 1.8***
   Total R 2   53.7
  SCT constructs Outcome expectancies 0.470 40.1***
   Self efficacy 0.316 7.4***
   Total R 2   47.5
  Team variables Perceived reliability of colleagues 0.566 37.6***
   Perceived role 0.220 4.6***
   Total R 2   42.2
  Combined constructs Outcome expectancies 0.422 40.1***
   Perceived reliability of colleagues 0.284 15.8***
   Subjective norm 0.183 3.7***
   Self efficacy 0.154 1.8***
   Perceived role 0.127 1.3***
   Emotional attitude -0.133 0.8**
   Total R 2   63.5
Explore what diagnosis means to patient (n = 371) TPB constructs Subjective norm 0.434 36.4***
   Perceived behavioural control 0.389 12.2***
   Total R 2   48.6
  SCT constructs Self efficacy 0.470 29.4***
   Outcome expectancies 0.149 1.7**
   Total R 2   31.1
  Team variables Perceived reliability of colleagues 0.349 10.8***
   Perceived role 0.269 7.2***
   Total R 2   18.0
  Combined constructs Subjective norm 0.334 36.3***
   Perceived behavioural control 0.296 12.3***
   Self efficacy 0.161 1.9***
   Perceived role 0.127 1.2**
   Perceived reliability of colleagues 0.109 1.0**
   Total R 2   52.7
  1. * p < 0.05; ** p < 0.01; *** p < 0.001. These significance levels are associated with the increase in R2 as explanatory variables are added stepwise to the regression models. The variable that explained the greatest amount of variation in intention was added first. On subsequent steps the variable that explained the greatest amount of the residual variation was added provided that the improvement in the fit of the model was significant at the 5% level