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Open Access Highly Accessed Correspondence

Methodological issues in epidemiological studies of periodontitis - how can it be improved?

Roos Leroy*, Kenneth A Eaton and Amir Savage

BMC Oral Health 2010, 10:8  doi:10.1186/1472-6831-10-8

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CAL of severe periodontitis (case definitions for periodontitis Page and Eke, 2007)

wisam kamil   (2014-03-13 17:27)  International Islamic University Malaysia

While I was browsing Roos Leroy et al. paper,  2010, BMC OH (Methodological issues in epidemiological studies of periodontitis) I noticed that authors displayed severe periodontitis according to case definitions for periodontitis (Page and Eke, 2007) in table 1 as  2 interproximal sites with CAL ≥ 4??? Which is supposed to be 6 as displayed in table 13 in the original paper J periodontology 2007;78:1387-1399, I am sure that is a typing error but it may create overestimation of severe periodontitis and overlap with moderate cases

Competing interests

None declared

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