For statistical evaluation, Microsoft Excel 2016 (Version 16.31, Microsoft Cooperation, Redmond, USA) and STATA (Version 16, STATA Corp LLC, Texas, US) was used. The predictive value of the four scores for the pull-out values was carried out by means of a mixed-effects linear regression. Akaike´s information criterion (AIC) was used to identify which score best fit the pull-out data5. Significance was defined as p ≤ 0.05.
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