Table 2 Summary of included articles: measures and study design

Knowledge

[30, 31, 35, 37, 39, 40, 51, 53, 58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75]

[36, 42, 78,79,80,81,82]

[28, 29, 32, 33, 38, 41, 43, 49, 50, 52, 56, 80, 83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115]

[28, 30, 33, 34, 37,38,39, 41,42,43,44, 47, 49,50,51, 59,60,61, 63, 64, 68, 70, 71, 73,74,75, 78,79,80, 84, 87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103, 107,108,109, 111,112,113,114]

[29, 45, 52, 53, 56, 103]

[31, 32, 35, 36, 40, 46, 58, 62, 67, 69, 72, 81, 82, 85, 86, 105, 106, 110]

Attitude

[31, 39, 40, 44, 53,54,55, 58, 60, 63,64,65,66,67,68, 70,71,72, 74, 76, 77]

[36, 78, 81, 82]

[28, 32, 33, 43, 49, 50, 52, 56, 80, 89,90,91,92, 94,95,96, 100,101,102,103,104,105,106, 110, 112]

[28, 33, 39, 43, 49, 50, 60, 63,64,65,66, 68, 70, 71, 74, 78, 80, 89,90,91,92, 94,95,96, 100,101,102,103, 112]

[45, 48, 52,53,54,55,56, 104]

[31, 32, 35, 36, 40, 46, 58, 67, 72, 77, 81, 82, 105, 106, 110]

Perceived risk

[31, 35, 40, 53,54,55, 57, 60, 61, 66, 67, 76, 77]

[81, 82]

[29, 41, 52, 56, 80, 84, 91, 97, 101, 104, 106, 108, 110, 111]

[41, 60, 63, 66, 76, 80, 84, 91, 97, 101, 108, 111]

[29, 48, 52,53,54,55,56, 104]

[31, 35, 40, 67, 77, 81, 82, 106, 110]

Perceived response-efficacy

[35, 48, 53, 76]

None

[45, 102, 105]

[76, 102]

[45, 48, 53]

[35, 105]

Perceived self-efficacy

[30, 64, 76]

None

[56, 87]

[30, 64, 76, 87]

[56]

None

Descriptive norm

None

None

[104]

None

[104]

None

Subjective norm

[55]

None

None

None

[55]

None

Injunctive norm

None

None

[56]

None

[56]

None

Interpersonal communication

None

[42]

None

[42]

None

None