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Table 1 Demographic characteristics of the subjects

From: The usefulness of biotyping in the determination of selected pathogenicity determinants in Streptococcus mutans

Outcome variable

Mean ± SD in group

P

ECC (n = 61)

CF (n = 29)

Age (yr)

6 ± 1.9

6 ± 1,5

0.37a

Sex, number

  

0.75b

 Female number %

31 (51)

12 (41)

 

 Male number %

30 (49)

17 (59)

Caries status dmftc score

6.5 ± 2.5

0

 
  1. ECC: early childhood caries; CF: caries free.
  2. aBy the nonparametric Mann–Whitney U test for independent samples.
  3. bBy the Fisher’s exact test.
  4. cdmft, decayed, missing, and filled teeth.
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BMC Microbiology

ISSN: 1471-2180

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