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Table 2 Psychosocial attitudes about HIV vaccination in sample of rural drug users

From: HIV vaccine acceptability among high-risk drug users in Appalachia: a cross-sectional study

Construct Measure Dichotomized response N (%)
Attitudes (n = 433)   
   Severity In your opinion, how serious would it be if you were infected with HIV?b Very/Extremely Serious 427 (98.6)
   Susceptibility If you did not get a vaccine, how likely do you think you would be to get HIV in your lifetime?b Likely/Very Likely 100 (23.1)
   Benefits In your opinion, how much would an HIV vaccine benefit you?c Some/A lot 313 (72.3)
   Barriers What factors would make it difficult for you to receive the HIV vaccine? [see Figure 1] [Endorsed at least one barrier] 344 (79.4)
   Experiential [3-items] For me, getting an HIV vaccine would be… ["stressful - relaxing", “frightening – comforting”, “irresponsible – responsible”]a [Positive rating on all three items] 343 (79.2)
Subjective norms (n = 432)   
   Descriptive norm   Affirmative response on the following two items 195 (45.1)
   Normative belief If an HIV vaccine became available, most people important to me would get it.d Agree/Strongly Agree 358 (82.9)
   Motivation to comply If most people got the HIV vaccine, would you be [More likely to get it/Less likely to get it/Would not affect my decision]e More likely to get it 218 (50.5)
   Injunctive norm   Affirmative response on the following two items 251 (58.1)
   Normative belief Most people important to me would be supportive of me getting the HIV vaccine.d Agree/Strongly Agree 408 (94.4)
   Motivation to comply If most people encouraged you to get the HIV vaccine, would you be [More likely to get it/Less likely to get it/Would not affect my decision]e More likely to get it 256 (59.3)
Personal agency    
   Behavioral control How much personal control do you feel that you would have over getting the HIV vaccine?f A lot/Complete control 276 (63.7)
   Self-efficacy How sure are you that you could get the HIV vaccine if …g Affirmative response each of the following 3 items 83 (19.2)
  …you had to pay for it out of pocket? Very/Extremely Sure 105 (24.2)
  …you had to travel out of town to get it? Very/Extremely Sure 184 (42.5)
  …your friends/partners did not want you to get it? Very/Extremely Sure 266 (61.4)
  1. aMeasured on 4-point semantic differential scales; dichotomized where 1 = rating of three or four on all items, 0 = rating of one or two on at least one item.
  2. bMeasured on 4-point scale dichotomized where: 0 = Very unlikely/Unlikely, 1 = Likely/Very likely.
  3. cMeasured on 4-point scale dichotomized where: 0 = Not at all/Little, 1 = Some/a lot.
  4. dMeasured on 4-point scale dichotomized where 0 = Strongly disagree/Disagree, 1 = Agree/Strongly agree.
  5. eDichotomized where 0 = Less likely to get it/Would not affect my decision, 1 = More likely to get it.
  6. fMeasured on 4-point scale dichotomized where 0 = No control/Some control, 1 = A lot of control/Complete control.
  7. gEach measured on 4-point scales dichotomized where 0 = Not sure at all/Somewhat sure, 1 = Very sure/Extremely sure. Total measure was dichotomized where 1 = rating of one on all items, 0 = rating of zero on at least one item.