. 2019 Apr 11;16(7):1306. doi: 10.3390/ijerph16071306

Table 3.

Adjusted DMFT scores of the control and Hapcheon groups before and after the CWFP implementation and the caries-reducing effects assessed by a comparison between the adjusted DMFT scores.

Before CWFP in 2000	Control in 2000 *			Hapcheon in 2000 **				p -Value
	N	Mean	SE ^‡	N	Mean	SE ^‡
Total (Age)	3602	1.82 ^‡	0.04	671	1.98 ^‡	0.09	-	0.094 ^‡
8	1194	1.00 ^§	0.04	213	0.92 ^§	0.10	-	0.456 ^§
10	1205	1.59 ^§	0.06	198	1.75 ^§	0.18	-	0.402 ^§
12	1203	2.86 ^§	0.08	260	3.04 ^§	0.17	-	0.346 ^§
After CWFP for 15 years	Control (National Data in 2013–2015) ^†			Hapcheon in 2015			Caries Reducing Effects	p -Value
	N	Mean	SE ^‡	N	Mean	SE ^‡	%
Total (Age)	952	1.42 ^‡	0.06	498	1.00 ^‡	0.09	29.6	<0.001 ^‡
8	243	0.44 ^§	0.06	103	0.50 ^§	0.10	-	0.615 ^§
10	239	0.88 ^§	0.08	116	0.50 ^§	0.12	43.2	0.009 ^§
12	239	1.38 ^§	0.12	117	0.87 ^§	0.17	37.0	0.017 ^§
15	231	2.82 ^§	0.20	162	2.10 ^§	0.24	25.5	0.019 ^§

Caries reducing effects = [(Control − Hapcheon in 2015)/Control]) × 100. * Participants in the national oral health survey conducted in 2000. ** Results from oral examinations conducted before the implementation of the CWFP. ^† Participants in the KNHANES conducted in 2013–2015. ^‡ Results from ANCOVA adjusted for age, gender, and number of dental sealants. ^§ Results from ANCOVA adjusted for gender and number of dental sealants. CWFP: Community water fluoridation program. KNHANES: Korea National Health and Nutrition Examination Survey. The Hapcheon township area is a CWFP area.