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Table 3 Validity and reliability of the Placement Evaluation Tool (PET) (19-items)

From: Measuring the quality of nursing clinical placements and the development of the Placement Evaluation Tool (PET) in a mixed methods co-design project

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