Table 5.

P values of the Pearson’s chi-squared test for sponsorship, commenter’s status, and comment classification

	P value
	Positive sentiment	Negative sentiment
Sponsorship	0.55	< 0.001*
Commenter’s status	< 0.001*	< 0.001*
Overall comment	< 0.001*	0.03
Focus of concern	0.13	< 0.001*
Invisalign’s disadvantages	0.27	< 0.001*

*Statistically significant at p < 0.05