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. 2013 Oct 20;9:30. doi: 10.1186/1746-160X-9-30

Table 1.

Comparison regarding gender and age between the groups

  2 × 11 mm   2 × 9 mm      
Gender:
 10 male
 10 female
 11 male
 8 female
 n.s.
 Chi-square-test
Age (years):
 15.62
 7.19
 15.55
 7.34
 n.s.
 Mann.Whitney-U-Test
* p < .05 **p < .001 ***p < .0001