Table 3.

Association between oral health conditions and urolithiasis grouped by age.

	Age ≤ 29	29 <age ≤ 44	44 <age ≤ 59	59 <age	p-for interaction
Odds ratio (95% CI)
Caries	0.901 (0.767 ~ 1.053)	0.909 (0.834 ~ 0.990)*	0.911 (0.835 ~ 0.992)*	0.908 (0.788 ~ 1.044)	0.050
Residual root or crown	0.742 (0.502 ~ 1.056)	0.994 (0.860 ~ 1.143)	1.102 (0.991 ~ 1.223)	1.005 (0.866 ~ 1.164)	0.039*
Dental calculus	0.845 (0.731 ~ 0.975)*	1.008 (0.935 ~ 1.087)	0.951 (0.879 ~ 1.028)	0.960 (0.837 ~ 1.101)	0.779
Dental plaque	0.915 (0.581 ~ 1.377)	0.867 (0.760 ~ 0.987)*	0.914 (0.824 ~ 1.014)	0.878 (0.704 ~ 1.089)	0.092
Gingivitis	1.827 (1.440 ~ 2.294)***	1.648 (1.459 ~ 1.856)***	2.106 (1.877 ~ 2.361)***	2.154 (1.679 ~ 2.746)***	<0.001***
Impacted tooth	1.234 (1.074 ~ 1.415)**	1.283 (1.169 ~ 1.407)***	1.397 (1.215 ~ 1.602)***	1.481 (0.933 ~ 2.282)	<0.001***

CI, confidence interval.

Model 3 was applied (see Methods—Statistical analyses section for descriptions of Model 3).

^*p < 0.05; ^**p < 0.01; ^***p < 0.001.