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

Age N Mean SD Min Max value Weekly aligner 15 25.5 4.8 20.5 34.9 0.50* Biweekly control 37 26.66 5.12 18.56 40.48 Sex Female Male % Female       Weekly aligner 9 6 60%     0.52** Biweekly control 26 11 70%     Race White Black Asian Hispanic Pac. Island.   Weekly aligner 8 (53%) 2 (12%) 3 (20%) 1 (7%) 1 (7%) 0.08*** Biweekly control 28 (76%) 5 (14%) 1 (3%) 3 (8%) 0

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