. 2021 Apr 28;2021:9926069. doi: 10.1155/2021/9926069

Table 4.

Crude and adjusted logistic regression models of the association between previous orthodontic treatment and caries experience (n = 9486).

Outcome	Main predictor	Crude model	P value	Adjusted model^∗	P value
Outcome	Main predictor	Odds ratio (95% CI)	P value	Odds ratio (95% CI)	P value
Any caries experience
DT > 0	Previous orthodontic treatment	0.29 (0.23–0.36)	<0.0001	0.41 (0.33–0.51)	<0.0001
DT > 0	Yes vs. no (ref.)	0.29 (0.23–0.36)	<0.0001	0.41 (0.33–0.51)	<0.0001
FT > 0	Previous orthodontic treatment	2.23 (1.46–3.41)	0.0004	1.67 (1.07–2.61)	0.03
FT > 0	Yes vs. no (ref.)	2.23 (1.46–3.41)	0.0004	1.67 (1.07–2.61)	0.03
DFT > 0	Previous orthodontic treatment	1.03 (0.67–1.56)	0.91	0.97 (0.62–1.50)	0.87
DFT > 0	Yes vs. no (ref.)	1.03 (0.67–1.56)	0.91	0.97 (0.62–1.50)	0.87

Severe caries experience
DT > 2	Previous orthodontic treatment	0.25 (0.15–0.40)	<0.0001	0.36 (0.22–0.58)	<0.0001
DT > 2	Yes vs. no (ref.)	0.25 (0.15–0.40)	<0.0001	0.36 (0.22–0.58)	<0.0001
FT > 11	Previous orthodontic treatment	0.78 (0.62–0.98)	0.03	0.74 (0.60–0.94)	0.01
FT > 11	Yes vs. no (ref.)	0.78 (0.62–0.98)	0.03	0.74 (0.60–0.94)	0.01
DFT > 12	Previous orthodontic treatment	0.64 (0.50–0.81)	0.001	0.60 (0.50–0.77)	<0.0001
DFT > 12	Yes vs. no (ref.)	0.64 (0.50–0.81)	0.001	0.60 (0.50–0.77)	<0.0001

CI, confidence interval. ^∗Adjusted for confounding variables (age, gender, race/ethnicity, socioeconomic status, and education).