MAIW assigned to the intervention group filled up the validated HBM 96-item questionnaire in Persian before and after the designed intervention [16]. This questionnaire is based on six constituent constructs including perceived sensitivity (PSS) and severity (PSV) (17 items), cue to action (CA, 15 items), perceived benefits (PBF) and barriers (PBR) (54 items), and SE (10 items). A four-point Likert scale was used for most items (PSS, PSV, PBR, and CA) within a score range from 1 (strongly disagree) to 4 (strongly agree). Also, a five-point Likert scale was employed for the SE sub-group, ranging from 1 “not confident at all” to 5 “very confident”. Based on the items available in PSS and PSV sub-groups, the minimum and maximum score values are 17 and 68, respectively, while the PBF and PBR have a maximum score of 216 and a minimum score of 54. According to the Likert scale ranges and the number of items in the questionnaire, the lowest and highest scores for CA and SE are 15 and 60, as well as 10 and 50, respectively [16]. The internal consistency reliability of the HBM questionnaire was assessed using Cronbach’s alpha coefficient (CAC). High reliability was recognized by estimating CACs of 0.72–0.85 for the different constructs in the questionnaire. The content validity was also determined using 10 experts in the field of community health and medicine. The questionnaire was filled out face to face in an hour. The collected data before the intervention were statistically analyzed to determine with which part of the HBM questionnaire did the intervened individuals have the most difficulty.

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