[Retracted] A Study on Parents’ Attitudes towards Middle School Students’ Online Learning Based on Statistical Analysis

Table 2

Measurement scale of perceived usefulness.

Latent variables	Item code	Questionnaire content design	Source
Perceived usefulness	PU1	Online learning platforms currently in use can improve children’s learning results.	Davis [24]
	PU2	Online learning platforms are being used to meet the needs of children.
	PU3	Online learning platforms are being used to solve children’s learning puzzles.