Table 3 Validity and reliability of the Placement Evaluation Tool (PET) (19-items)
| Variable | Sample | Result |
Significance (p-value) | Outcome |
|---|---|---|---|---|
| Construct validity | ||||
| Content validity: | 12 students | .82 | Valid: >.78 | |
| I-CVI: Stage 5 | 10 educators | .95 | Valid: >.78 | |
| Concurrent validity: | ||||
| Correlation with CLES scale | 62 students | .834 | 0.01 | Valid: highly significant |
| Criterion validity: | ||||
| (a) Item to Total score | 1263 | .606 to .832 | < 0.001 | Valid |
| (b) Scale vs Global score | 1263 | .722 | 0.01 | Valid >.7: highly significant. |
| (c) Inter-Item correlation (ICC: Intraclass Correlation Coefficient). | 1263 | .709 (CI: .692–.727) | < 0.001 | Valid- .5–.75 = good correlation |
| Reliability | ||||
| Internal consistency reliability (Cronbach’s alpha) | ||||
| (1). Clinical Environment | 1263 | .94 | N/A | Reliable (>.70) |
| (2). Learning Support | 1263 | .96 | N/A | Reliable (>.70) |
| Scale: Test and retest (Wilcoxon signed rank test) | 22 students | z = −1.705 | .088 | Acceptable non-significant difference at retest |