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Table 5 Cronbach’s α and Average inter-item correlation coefficients assessed by t0-PDA (Exper group) scores (N = 54)

From: The Patient’s Denture Assessment (Thai version) is a valid and reliable tool for evaluating the outcome of treatment with complete denture

Topics

Cronbach’s α

Average inter-item correlation coefficient

Summary score

0.95

0.47

Function

0.90

0.70

Lower denture

0.85

0.60

Upper denture

0.93

0.77

Expectation

0.76

0.57

Beauty and speech

0.95

0.83

Importance

0.87

0.65