Table 1: Comparison of demographics of weekly aligner versus biweekly control groups.

AgeN MeanSDMinMax 𝑃 value

Weekly aligner1525.54.820.534.90.50*
Biweekly control3726.665.1218.5640.48

SexFemaleMale% Female

Weekly aligner9660%0.52**
Biweekly control261170%

RaceWhiteBlackAsianHispanicPac. Island.

Weekly aligner8 (53%)2 (12%)3 (20%)1 (7%)1 (7%)0.08***
Biweekly control28 (76%)5 (14%)1 (3%)3 (8%)0

Wilcoxon rank sum test.
Fisher exact test.
White versus nonwhite Fisher exact test.