Table 1 Demographic characteristics and dental caries outcomes of the participants (n = 709)

From: Human genes influence the interaction between Streptococcus mutans and host caries susceptibility: a genome-wide association study in children with primary dentition

Characteristics n /%

Total (n = 709)

S. mutans + (n = 377)

S. mutans – (n = 332)

P-value (comparison between S. mutans + and –)

Dental caries

dmft ≥ 1

340 (48%)

231 (61%)

109 (33%)

<0.0001

dmftw ≥ 1

355 (50%)

240 (64%)

115 (35%)

<0.0001

Age/year, mean (SD)

6.4 (3.0)

7.1 (2.9)

5.7 (3.0)

<0.0001

Male

371 (52%)

203 (54%)

168 (51%)

0.218

Race_White

587 (84%)

312 (84%)

275 (84%)

0.767

Ethnicity_Hispanic

22 (3%)

15 (4%)

7 (2%)

0.221

  1. SD is the standard deviation. The P values were estimated by comparing children with or without S. mutans using ANOVA in 526 children randomly selected from each family. The average age of the dmft = 0 group and dmft ≥ 1 group was 5.6 ± 3.2 and 7.3 ± 2.6, respectively (P < 0.0001)
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