Skip to main content

Table 2 Corrected Item-Total Correlation and Cronbach’s Alpha of Items

From: Development and validation of dust exposure prevention questionnaire for cardiovascular patients based on the health belief model

Domain Item Mean (SD) Corrected Item-Total Correlation Cronbach’s Alpha if Item Deleted Cronbach’s Alpha
Perceived susceptibility Psu1 3.86 (1.0) .660 .774 .825
Psu2 3.97 (.99) .683 .768
Psu3 3.75 (1.0) .651 .777
Psu4 3.56 (1.0) .585 .796
Psu5 3.46 (1.0) .506 .819
Perceived barriers Pba1 3.09 (1.2) .601 .617 .727
Pba2 3.20 (1.3) .613 .607
Pba3 3.22 (1.3) .470 .694
Pba4 3.24 (1.2) .394 .734
Perceived severity Pse1 4.34 (.76) .530 .688 .757
Pse2 4.10 (.81) .655 .617
Pse3 3.95 (.83) .599 .646
Pse4 3.61 (1.0) .407 .777
Perceived benefits Pbe1 4.16 (.77) .368 .664 .678
Pbe2 4.34 (.71) .557 .547
Pbe3 4.16 (.84) .460 .607
Pbe4 4.25 (.77) .453 .610
Cues to action Cta1 3.80 (1.3) .646 .815 .842
Cta2 3.72 (1.3) .652 .815
Cta3 3.69 (1.3) .678 .812
Cta4 3.47 (1.4) .638 .816
Cta5 3.68 (1.2) .599 .822
Cta6 3.69 (1.1) .595 .822
Cta7 3.66 (1.1) .404 .840
Cta8 3.64 (1.1) .463 .835
Cta9 2.95 (1.3) .331 .850
Se1 3.51 (1.1) .578 .736
Se2 3.42 (1.1) .574 .738
Se3 3.80 (.97) .610 .722
Se4 3.72 (1.1) .598 .724