Table 3. Intraclass correlation coefficients for arch width variables used to assess intraexaminer reliability.

ICW, Intercanine width (distance between the cusp tip of the right and left canines); IP1W, interfirst premolar width (distance between the cusp tip of the right and left first premolars); IP2W, intersecond premolar width (distance between the cusp tip of the right and left second premolars); IM1W, interfirst molar width (distance between the mesiobuccal cusp tip of right and left first molars); IM2W, intersecond molar width (distance between the mesiobuccal cusp tip of the right and left second molars).

The variables were measured on two occasions 3 months apart by one examiner (DA). Intraexaminer reliability was obtained by a one-way random effects model. Intraclass correlation coefficients were significantly different from 0.