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Table 1 Demographic characteristics and environmental factors of the study population stratified according to caries experience

From: Associations of PART1 and DEFB1 polymorphisms with Dental Caries in twelve-year-old children in Southern China: a cross-sectional study

Variable

Caries-free

n (%)

Caries experience

n (%)

χ 2

P value

Total

586 (55.2)

475 (44.8)

  

Sex

  

14.755

< 0.001

Male

342 (60.7)

221 (39.3)

  

Female

244 (49.0)

254 (51.0)

  

Ethnicity

  

12.622

0.002

Han

135 (49.1)

140 (50.9)

  

Zhuang

178 (52.0)

164 (48.0)

  

Baikuyao

273 (61.5)

171 (38.5)

  

Parental education level

  

3.638

0.056

Primary school and below

317 (58.1)

229 (41.9)

  

Secondary school and above

269 (52.2)

246 (47.8)

  

Frequency of tooth brushing

  

5.953

0.015

≤ once/day

363 (58.4)

259 (41.6)

  

> once/day

223 (50.8)

216 (49.2)

  

Frequency of sugary food intake

  

10.150

0.001

≤ once/week

217 (62.2)

132 (37.8)

  

> once/week

369 (51.8)

343 (48.2)

  

Regularly eat at school

  

7.025

0.008

Yes

345 (58.9)

241 (41.1)

  

No

241 (50.7)

234 (49.3)