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. 2017 Oct 2;17:767. doi: 10.1186/s12889-017-4783-9

Table 5.

Comparisons of ECC incidence between two groups at the follow-up

Groups time Intervention Number (%) Control Number (%) p-value*
ECC incidence at follow-up 7 (13) 17 (35) 0.001

*Chi-square test