The Relationship of Orthodontic Treatment Need with Periodontal Status, Dental Caries, and Sociodemographic Factors

Table 4

Comparison of TPI scores with age, gender, parental education, and parental monthly income.

	Age		Gender		Mothers’ education		Fathers’ education		Parents’ monthly income
	𝑥^2	𝑃	𝑥^2	𝑃	𝑥^2	𝑃	𝑥^2	𝑃	𝑥^2	𝑃
TPI	11.29	0.50	4.83	0.30	12.29	0.72	10.80	0.82	13.30	0.65