Associations among Orthodontic History, Psychological Status, and Temporomandibular-Related Quality of Life: A Cross-Sectional Study

Table 1

Demographic data of the participants.

	Without OS (n = 370)	With OS (n = 161)	value
Age (year)	21.80 ± 2.77	22.00 ± 2.74	0.443
Sex			0.010
Male	166 (44.86%)	53 (32.92%)
Female	204 (55.14%)	108 (67.08%)
Education level			0.087
Undergraduate	233 (62.97%)	88 (54.66%)
Master candidate	96 (25.95%)	45 (27.95%)
Doctor candidate	41 (11.08%)	28 (17.39%)
Family income per capita			<0.001
Less than 3000 yuan	107 (28.92%)	26 (16.15%)
3000∼6000 yuan	149 (40.27%)	61 (37.89%)
More than 6000 yuan	114 (30.81%)	74 (45.96%)
Medical student			0.009
Yes	175 (47.30%)	96 (59.63%)
No	195 (52.70%)	65 (40.37%)

OS, orthodontic history.