@jepcastel

Sample calculations for comparing rates.

, and . American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, 142 (4): 565-7 (October 2012)7485<m:linebreak></m:linebreak>JID: 8610224; 2012/08/20 received; 2012/08/20 revised; 2012/08/20 accepted; ppublish;<m:linebreak></m:linebreak>Sample size; RR.
DOI: 10.1016/j.ajodo.2012.08.009

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