TY - JOUR
T1 - Analysis of periodontal data using mixed effects models
AU - Cho, Young Il
AU - Kim, Hae Young
N1 - Publisher Copyright:
© 2015 Korean Academy of Periodontology.
PY - 2015
Y1 - 2015
N2 - A fundamental problem in analyzing complex multilevel-structured periodontal data is the violation of independency among the observations, which is an assumption in traditional statistical models (e.g., analysis of variance and ordinary least squares regression). In many cases, aggregation (i.e., mean or sum scores) has been employed to overcome this problem. However, the aggregation approach still exhibits certain limitations, such as a loss of power and detailed information, no cross-level relationship analysis, and the potential for creating an ecological fallacy. In order to handle multilevel-structured data appropriately, mixed effects models have been introduced and employed in dental research using periodontal data. The use of mixed effects models might account for the potential bias due to the violation of the independency assumption as well as provide accurate estimates.
AB - A fundamental problem in analyzing complex multilevel-structured periodontal data is the violation of independency among the observations, which is an assumption in traditional statistical models (e.g., analysis of variance and ordinary least squares regression). In many cases, aggregation (i.e., mean or sum scores) has been employed to overcome this problem. However, the aggregation approach still exhibits certain limitations, such as a loss of power and detailed information, no cross-level relationship analysis, and the potential for creating an ecological fallacy. In order to handle multilevel-structured data appropriately, mixed effects models have been introduced and employed in dental research using periodontal data. The use of mixed effects models might account for the potential bias due to the violation of the independency assumption as well as provide accurate estimates.
KW - Linear models
KW - Statistical data interpretation
KW - Statistics
UR - http://www.scopus.com/inward/record.url?scp=84924308351&partnerID=8YFLogxK
U2 - 10.5051/jpis.2015.45.1.2
DO - 10.5051/jpis.2015.45.1.2
M3 - Article
AN - SCOPUS:84924308351
SN - 2093-2278
VL - 45
SP - 2
EP - 7
JO - Journal of Periodontal and Implant Science
JF - Journal of Periodontal and Implant Science
IS - 1
ER -