Principal components factor loadings of attitudes towards researchers and influences on research participation
| Item | Survey 1, mean (SD) | Factor 1: attitudes towards research and researchers | Factor 2: who and what | Factor 3: potential barriers | Factor 4: research benefits | Survey 2, mean (SD) | Survey 2 factor 1: attitudes towards research and researchers | Survey 2 factor 2: research benefits |
|---|---|---|---|---|---|---|---|---|
| Attitudes towards researchers and research | ||||||||
| Their research makes a significant contribution to community | 6.57 (2.69) | 0.86 | 7.0 (2.62) | 0.77 | ||||
| Report their results to community | 6.19 (2.48) | 0.85 | 5.70* (2.59) | 0.93 | ||||
| Announce their studies to the community | 6.16 (2.41) | 0.84 | 6.62 (2.60) | 0.90 | ||||
| Are available to community | 6.45 (2.26) | 0.78 | 6.03 (2.82) | 0.88 | ||||
| Their research makes a significant contribution to me personally | 5.65 (2.93) | 0.76 | ||||||
| Are friendly | 7.40 (2.08) | 0.63 | 0.51 | |||||
| Use understandable language | 6.66 (2.34) | 0.57 | 0.44 | |||||
| Potential influences on research participation | ||||||||
| Group/person conducting study | 6.85 (2.67) | 0.87 | ||||||
| The researcher asked me to participate | 6.44 (2.80) | 0.71 | ||||||
| My healthcare provider asked me to participate | 6.90 (2.80) | 0.68 | ||||||
| Research topic | 8.02 (2.30) | 0.67 | 0.44 | 8.10 (2.44) | 0.96 | |||
| Length of study | 6.57 (2.30) | 0.61 | 0.31 | |||||
| Not invasive or painful | 6.92 (2.91) | 0.75 | ||||||
| Information legally protected from release | 7.51 (2.93) | 0.71 | ||||||
| Release of information will affect my insurance coverage | 6.85 (3.35) | 0.72 | ||||||
| Positively affect my healthcare | 7.92 (2.53) | 0.70 | 0.50 | |||||
| Research will help my family and me | 7.97 (2.77) | 0.33 | 0.67 | 8.36* (2.54) | 0.93 | |||
| Research is worthwhile | 8.73 (2.07) | 0.33 | 0.67 | 8.18 (2.38) | 0.92 | |||
| Research will help the community | 8.59 (2.12) | 0.43 | 0.67 | 8.27 (2.30) | 0.92 | |||
| Monetary reward offered | 3.39 (2.86) | 0.49 | −0.45 | |||||
| Time and effort for participation | 6.86 (2.55) | 0.46 | 0.40 | |||||
| Factor, means (SD) | 6.52 (1.90) | 7.04 (2.02) | 7.42 (2.30) | 8.47 (1.91) | 6.49 (2.47) | 8.23 (2.30) | ||
| Cronbach's α | 0.90 | 0.81 | 0.80 | 0.82 | 0.92 | 0.95 | ||
Items were rated on a 1–10 scale with 1 labelled ‘strongly disagree’ and 10 labelled ‘strongly agree’. Loadings below 0.30 are omitted from the table. Factor-based scales were constructed by averaging item scores loading 0.50 or higher uniquely on a factor. Blanks in the survey 2, mean column indicate item not asked.
*Item is worded slightly differently in survey 2.