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. 2020 Apr 22;20:124. doi: 10.1186/s12903-020-01112-8

Table 3.

Changes in prevalence ratios (PRs) (95% CI) of untreated dental caries and sealant by income level

	Children aged 6–11				Adolescents aged 12–18
	2007–09	2013–15			2007–09		2013–15
	Model 1^a	Model 2^b	Model 1^a	Model 2^b	Model 1^a	Model 2^b	Model 1^a	Model 2^b
Untreated dental caries
Income level
I (lowest)	2.29 (1.51, 3.50)^***	2.11 (1.38, 3.23)^***	1.12 (0.64, 1.96)^NS	1.10(0.62, 1.93)^NS	1.47 (1.24, 1.74)^***	1.44 (1.22, 1.71)^***	1.77 (1.37, 2.32)^***	1.67 (1.28, 2.18)^***
II	2.18 (1.43, 3.34)^***	2.14 (1.40, 3.28)^***	0.91 (0.51, 1.63)^NS	0.91 (0.51, 1.63)^NS	1.12 (0.93, 1.35)^NS	1.11 (0.92, 1.33)^NS	1.19 (0.88, 1.59)^NS	1.15 (0.85, 1.54)^NS
III	1.44 (0.91, 2.27)^NS	1.44 (0.91, 2.27)^NS	0.66 (0.35, 1.25)^NS	0.67 (0.36, 1.27)^NS	0.96 (0.79, 1.17)^NS	0.96 (0.79, 1.17)^NS	1.17 (0.87, 1.56)^NS	1.16 (0.87, 1.55)^NS
IV (highest)	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Sealants
Income level
I (lowest)	0.70 (0.59, 0.85)^***	0.73 (0.61, 0.88)^***	0.90 (0.76, 1.06)^NS	0.92 (0.78, 1.09)^NS	0.54 (0.45, 0.66)^***	0.57 (0.47, 0.70)^***	0.70 (0.58, 0.85)^***	0.70 (0.58, 0.86)^***
II	0.88 (0.74, 1.03)^NS	0.89 (0.75, 1.04)^NS	0.89 (0.75, 1.04)^NS	0.90 (0.76, 1.06)^NS	0.68 (0.57, 0.82)^***	0.71 (0.59, 0.84)^***	0.86 (0.73, 1.03)^NS	0.87 (0.73, 1.03)^NS
III	0.89 (0.76, 1.05)^NS	0.90 (0.76, 1.05)^NS	1.01 (0.86, 1.18)^NS	1.01 (0.87, 1.18)^NS	0.85 (0.72, 1.00)^*	0.85 (0.73, 1.00)^NS	0.86 (0.73, 1.02)^NS	0.86 (0.73, 1.01)^NS
IV (highest)	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00

^a Adjusted for age, gender

^b Adjusted for age, gender, FTB (frequency of tooth brushing), and RDC (regular dental check-up)

* P < 0.05, **P < 0.01, *** P < 0.001