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Table 1 Summary of Measures in the Survey

From: Cognitive testing of the Colon Cancer Screening Behaviours Survey with South Asian immigrants in Canada

Domains Pre-existing measures Additions
Colon cancer screening practices – Total: 9 Items
Heard, had, and intention for colon cancer screening Vernon et al. [37] 3 items added
 • 2 items drawn from prior literature [43]  • 1 item - researcher developed
Colon cancer screening beliefs and attitudes - Total: 60 Items
Perceived susceptibility & Perceived severity Perceived susceptibility and perceived severity Perceived susceptibility
  Ozsoy et al. [31] used Jacobs [44] measures for colorectal cancer screening that were initially drawn from Champion’s [45] breast cancer screening measures  •  1 item was added [46]
Perceived severity
 • 2 items added [47, 48]
Perceived benefits & Perceived barriers Perceived benefits and perceived barriers Perceived benefits
  Rawl et al. [49] colorectal cancer screening measures were drawn from Champion’s [50] breast cancer screening measures  • 2 items: 1 item for the home stool test and colonoscopy [51]
Perceived barriers
 • 3 items were added [34, 52]
Perceived self-efficacy & Subjective norm Perceived self-efficacy and subjective norm Perceived self-efficacy
  Flight et al. [53] used measures from Tiro et al. [54] and Vernon et al. [55]  • 1 item was added [56]
Subjective norm
 • 1 item - researcher developed [1]
Socio-demographics – Total 15 items
Socio-contextual items relevant to SA immigrants Items drawn from scoping and focus group studies [1, 2] 4 items - researcher developed [1]