Survey item | Male (n = 137) | Female (n = 116) | Prevalence ratioa,b | 95% CI | ||
---|---|---|---|---|---|---|
Selected | Not selected | Selected | Not selected | |||
Influencing factors | ||||||
What the research study involves (e.g., survey, drug testing for research) | 100 | 37 | 81 | 35 | 0.98 | (0.84, 1.15) |
How much time is required | 87 | 50 | 72 | 44 | 1.02 | (0.85, 1.23) |
How often they have to come in for visits | 78 | 59 | 61 | 55 | 0.98 | (0.78, 1.22) |
How far they have to travel to participate (i.e., nearby vs. out of town) | 85 | 52 | 76 | 40 | 1.09 | (0.90, 1.31) |
Privacy of the research office | 92 | 45 | 81 | 35 | 1.18 | (0.70, 2.01) |
Why their information is being collected and what it will be used for | 86 | 49 | 77 | 39 | 1.09 | (0.91, 1.31) |
Whether their information will be kept confidential | 97 | 40 | 92 | 24 | 1.15 | (0.99, 1.32) |
Whether the staff doing the research is friendly and trustworthy | 102 | 35 | 87 | 29 | 1.03 | (0.89, 1.19) |
Whether the research institution or university is respected | 65 | 72 | 57 | 59 | 1.05 | (0.81, 1.36) |
Whether they can skip questions of parts of the study that make them uncomfortable | 70 | 67 | 77 | 39 | 1.34* | (1.09, 1.65) |
How much money they will receive | 99 | 38 | 82 | 34 | 1.01 | (0.87, 1.18) |
How much the project will benefit them overall | 81 | 56 | 77 | 39 | 1.14 | (0.94, 1.38) |
Whether their appointment times will interfere with their work schedule | 64 | 73 | 45 | 71 | 0.84 | (0.63, 1.13) |
Whether they have childcare so that they can attend their appointments | 66 | 71 | 59 | 57 | 1.07 | (0.83, 1.38) |
How their friends, family, or partner feels about them participating | 68 | 69 | 45 | 71 | 0.79 | (0.60, 1.05) |
Motivations | ||||||
Financial incentive (i.e., money or gift card given for participation) | 110 | 27 | 100 | 16 | 1.10 | (0.99, 1.23) |
They believe in the mission of the research and want to contribute | 86 | 51 | 71 | 45 | 0.99 | (0.81, 1.20) |
Their friends, family, or partner participates | 89 | 48 | 72 | 44 | 0.98 | (0.82, 1.19) |
They want to tell their story | 77 | 60 | 62 | 54 | 0.96 | (0.77, 1.21) |
They know someone on the research team and want to help them out | 36 | 101 | 45 | 71 | 1.57* | (1.09, 2.26) |
They want to learn about the topic | 73 | 64 | 56 | 60 | 0.94 | (0.74, 1.20) |
They would want to get free testing (for example, rapid tests for HIV & Hepatitis C) if it was offered as part of the study | 93 | 44 | 79 | 37 | 1.03 | (0.87, 1.22) |
They would want to be linked with resources and/or follow-up testing if it was offered as part of the study | 93 | 44 | 78 | 38 | 1.02 | (0.86, 1.21) |
They would want to try a new treatment if it was offered as part of the study | 93 | 44 | 79 | 37 | 1.03 | (0.87, 1.22) |
Their friends, family, or partner pressures them to participate so that they can share the financial incentive | 50 | 87 | 35 | 81 | 0.84 | (0.59, 1.20) |
Barriers | ||||||
Not being able to get in touch with participants because their contact information changed | 111 | 26 | 94 | 22 | 1.03 | (0.91, 1.16) |
Not being able to get in touch with participants because they gave false contact information when they started the study | 76 | 61 | 69 | 47 | 1.11 | (0.90, 1.37) |
They may have trouble getting transportation for their appointments | 97 | 40 | 89 | 27 | 1.12 | (0.96, 1.30) |
They may have trouble being able to show up at a specific appointment time | 94 | 43 | 85 | 31 | 1.09 | (0.93, 1.28) |
They may have trouble getting to their appointment because of their work schedule | 66 | 71 | 55 | 61 | 1.03 | (0.79, 1.33) |
They may have trouble finding childcare so that they can go to their appointment | 62 | 75 | 65 | 51 | 1.26 | (0.98, 1.61) |
They may have concerns about confidentiality and privacy | 70 | 67 | 62 | 54 | 1.08 | (0.86, 1.37) |
They may be afraid that the staff would judge them if they are still using drugs | 60 | 77 | 56 | 60 | 1.15 | (0.88, 1.50) |
They may have stopped using drugs and no longer think the study is relevant to them | 63 | 74 | 57 | 59 | 1.11 | (0.86, 1.44) |
They are in a drug treatment or recovery facility and are unable to be contacted by research staff | 81 | 56 | 65 | 51 | 0.98 | (0.79, 1.21) |
Their friends, family, or partner may want them to stop participating | 38 | 99 | 39 | 77 | 1.23 | (0.85, 1.79) |