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Table 5 Results of Independent Sample t-test – Theory of Planned Behaviour constructs shown to have satisfactory-gooda internal reliability

From: Evaluating a handwashing with soap program in Australian remote Aboriginal communities: a pre and post intervention study design

Theory of planned behaviour - construct

Pre Survey Meanb (SD)

Post Survey Meanb (SD)

Sig (2-tailed)***

95 % confidence interval

Lower

Upper

Community 1 (Top End Region)

 Attitude overall

6.0

6.6

.006

−1.02

−0.18

 Cronbach alpha pre 0.84

(1.3)

(1.2)

 Cronbach alpha post 0.53

 Perceived behavioural control

4.6

5.7

.001

−1.74

−0.43

 Cronbach alpha pre 0.53

(2.2)

(1.7)

 Cronbach alpha post 0.70

Community 4 (Kimberley Region)

 Perceived behavioural control

6.2

5.3

.002

0.34

1.43

 Cronbach alpha pre 0.53

(1.3)

(1.9)

 Cronbach alpha post 0.70

  1. aCronbach alpha satisfactory at 0.60 level bConstruct scale score range 1–7. ***Significance at p = <0.05 level