Statistical analyses
Data were transferred to MS Excel (Microsoft, USA) and analyzed using
SPSS version 22.0 (IBM Corp, Armonk, NY). Measurements are expressed as
means±standard deviations (SDs).
The changes in nasal tip projection ratio, nasolabial angle, tip
location ratio, and nasal length ratio before and after surgery were
measured. Results were analyzed using the paired t -test and
Wilcoxon’s signed rank test.
Statistical significance was accepted for p -values of <
0.05. The statistical validity of this study was certified and reviewed
and proofread by statisticians at the department of statistics in a
national university.