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Table 4 Absolute and Relative socio-economic inequalities (95% CI) of untreated dental caries and sealant by income level

From: Did the extended coverage policy contribute to alleviating socioeconomic inequality in untreated dental caries of both children and adolescents in South Korea?

  Children aged 6–11 Adolescents aged 12–18
2007–09 2013–15 2007–09 2013–15
Model 1a Model 2b Model 1a Model 2b Model 1a Model 2b Model 1a Model 2b
Untreated dental caries
 SII 7.3 (3.3, 11.3) *** 7.0 (2.8, 11.2)** 0.8 (−3.3, 4.8)NS 0.4 (−3.6, 4.4)NS 16.4 (9.6, 23.2)*** 15.9 (9.0, 22.7)*** 13.9 (6.5, 21.2)*** 11.7 (4.3, 19.2)**
 RII 3.1 (1.9, 5.0) *** 2.7 (1.7, 4.5)*** 1.2 (0.6, 2.6)NS 1.2 (0.5, 2.5)NS 1.7 (1.4, 2.2)*** 1.7 (1.4, 2.1)*** 2.1 (1.5, 2.9)*** 1.9 (1.3, 2.6)***
Sealants
 SII −11.7 (− 18.1, −5.4)*** −9.3 (−16.4, −2.2)** −7.1 (−15.2, 0.9)NS −5.0 (− 13.2, 3.1)NS −20.9 (− 27.6, − 14.3)*** − 18.1 (− 24.8, − 11.4)*** − 14.9 (− 23.7, − 6.2)*** −14.3 (− 23.1, − 5.4)**
 RII 0.7 (0.5, 0.8)*** 0.7 (0.6, 0.9)*** 0.8 (0.7, 1.0)NS 0.9 (0.7, 1.1)NS 0.5 (0.4, 0.6)*** 0.5 (0.4, 0.6)*** 0.7 (0.5, 0.9)** 0.7 (0.5, 0.9)**
  1. a Adjusted for age, gender
  2. b Adjusted for age, gender, FTB (frequency of tooth brushing), and RDC (regular dental check-up)
  3. * P < 0.05, **P < 0.01, *** P < 0.001