Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Gender | No. of patients | Total treatment duration (months, mean ± SD) | P value | Fixed orthodontic treatment duration (months, mean ± SD) | P value |
| Male | 498 | 28.6±10 | 0.009* | 22.8±9.1 | 0.063 |
| Female | 858 | 27.1±9.2 | 23.1±9 |
*P < 0.05, one-way ANOVA.
