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Progress in Orthodontics

Table 3 Results of multiple linear regression† (stepwise method)

From: Surface wear of attachments in patients during clear aligner therapy: a prospective clinical study

Independent variables

Regression coefficient (β)

SE

t value

P value

Sex

Male

Reference

   

Female

0.147

0.065

2.346

0.020*

Attachment type

Conventional

Reference

   

Optimized

0.308

0.074

3.871

 < 0.001***

Initial volume

0.527

0.018

6.586

 < 0.001***

  1. †Dependent variable: wear volume of attachments
  2. *P < 0.05; ***P < 0.001
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