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Table 3 Reliability of the scale (n = 30 for test-retest correlation coefficient)

From: Validation of a susceptibility, benefits, and barrier scale for mammography screening among Peruvian women: a cross-sectional study

ITEM

Item-total correlation

Cronbach Alpha

Cronbach Alpha if item is eliminated

Test-retest correlation coefficient

SUS1

0.56

 

0.69

 

SUS2

0.62

 

0.62

 

SUS3

0.56

 

0.79

 

Total susceptibility

 

0.75

 

0.87; p < 0.001

BEN1

0.31

 

0.76

 

BEN2

0.62

 

0.63

 

BEN3

0.43

 

0.70

 

BEN4

0.58

 

0.64

 

BEN5

0.55

 

0.65

 

Total benefits

 

0.72

 

0.61; p < 0.001

BAR1

0.57

 

0.85

 

BAR2

0.63

 

0.84

 

BAR3

0.57

 

0.84

 

BAR4

0.55

 

0.85

 

BAR5

0.52

 

0.85

 

BAR6

0.56

 

0.85

 

BAR7

0.57

 

0.85

 

BAR8

0.55

 

0.85

 

BAR9

0.54

 

0.85

 

BAR10

0.51

 

0.85

 

BAR11

0.55

 

0.85

 

Total barriers

 

0.86

 

0.94; p < 0.001