Table 5.
Validity and reliability of scale items.
| Author (year) | Validity | Reliability | Final number of items |
|---|---|---|---|
| Anderson and Dedrick (1990) | Construct (with other scales) | Cronbach’s α = .85 | 11 |
| Bova et al. (2006) | Concurrent (correlation with other scales) | Cronbach’s α = .92/.95 | 15 |
| Bova et al. (2012) | Criterion (with other scales) | Cronbach’s α = .96 | 13 |
| Construct (factor analysis) | |||
| Corbie-Smith et al. (2002) | Face validity (picked items based on validity) | N/A | 12 |
| Doescher, et al. (2009) | Convergent (correlation between scales) | Cronbach’s α = .62 | 7 |
| Dugan et al. (2005) | Construct (correlation) Concurrent (2-sample t-test) |
Cronbach’s α = .87 (National) .86 (Regional) |
5 |
| Egede and Ellis (2008) | Convergent (correlation with other scales) | Cronbach’s α = .64–.92 | 17 |
| Goold et al. (2005) | Construct (correlation with other scales) | Cronbach’s α = .95 (long version) .91 (short version) |
13 (long version) 9 (short version) |
| Hall et al. (2002) | Construct (correlation with other scales) | Cronbach’s α = .94 | 10 |
| Hall et al. (2002) | Construct (correlation with other scales) | Cronbach’s α = .89 | 11 |
| Concurrent (correlation) | |||
| Hall et al. (2006) | N/A | Cronbach’s α = .72 | 4 |
| Hillen et al. (2012) | Construct (correlation with other scales) | Cronbach’s α = .92 | 18 |
| Jones and Barry (2011) | Face (percent of who completed survey) | Cronbach’s α = .91 | 14 |
| Content (qualitative data checked) | |||
| Convergent/discriminant (correlation with other scales) | |||
| Kelly et al. (2005) | Construct (literature review, focus groups, and phone interviews) | Cronbach’s α = .88 | 18 |
| Kressin et al. (2002) | Construct (multitrait analysis) | Cronbach’s α = .72–.89 | 34 |
| LaVeist et al. (2009) | Construct (correlation with other scales) | Cronbach’s α = .76 | 7 |
| Leisen and Hyman (2001) | Content (literature review) Convergent (t-values of factor loadings) |
Cronbach’s α = .95/.89 | 51 |
| Discriminant (three antecedents were evaluated) | |||
| Criterion (correlation) | |||
| Mainous et al. (2006) | Concurrent (correlation) | Cronbach’s α = .84 | 12 |
| Moseley et al. (2005) | N/A | Cronbach’s α = .84 | 11 |
| Radwin et al. (2005) | Convergent (correlation) | Cronbach’s α = .71–.81 | 16 |
| Discriminant (standard error for correlation sets) | |||
| Radwin and Cabral (2010) | Convergent (correlation) Discriminant (standard error for correlation sets) |
Cronbach’s α = .77 | 4 |
| Construct (confirmatory factor analysis) | |||
| Rose et al. (2004) | Concurrent (correlation with other scales) | Cronbach’s α = .75 | 10 |
| Safran et al. (1998) | Convergent (correlation) | Cronbach’s α = .81–.95 | 51 |
| Discriminant (correlation with other scales) | |||
| Shea et al. (2008) | Construct (correlations with other scales) | Cronbach’s α = .73/.77 | 9 |
| Shelton et al. (2010) | Construct (correlation with other scales) | Cronbach’s α = .87 | 12 |
| Stiggelbout et al. (2004) | Construct (correlation with other scales) | Cronbach’s α = .62–.83 | 14 |
| Thom et al. (1999) | Construct (correlations) | Cronbach’s α = .89 | 11 |
| Predictive (looking at predictions of trust with other variables) | |||
| Thom et al. (2011) | Convergent (correlation) | Cronbach’s α = .93 | 12 |
| Discriminant (correlation) | |||
| Thompson et al. (2004) | Construct (regression) | Cronbach’s α = .83 | 12 |
| Convergent (correlation) | |||
| Wallston et al. (1973) | Concurrent (correlation with other scales) | N/A | 10 |
| Wallston and Wallston (1978) | Construct (correlation with other scales) Predictive (correlation with other scales) |
Cronbach’s α = .50–85 | 18 |
| Wolf et al. (1978) | Face and content validity (interviews with participants) Construct (correlations with other subscales) |
Cronbach’s α = .93 | 26 |
| Zheng et al. (2002) | Construct (correlation with other scales) | Cronbach’s α = .92 (National) .89 (Regional) |
11 |