2.5. Statistical Analysis
keratoconus
KERATOCONUS
In the analysis, one eye per patient was included. In patients with bilateral keratoconus, the eye with the most advanced stage was selected. Data of patients who completed the 3-month study period were analyzed. Categorical variables are expressed as frequencies and percentages, and quantitative variables as mean and standard deviation (SD) or standard error of the mean (SEM). For the comparison of categorical variables, the chi-square test or the Fisher’s exact test was used, and for the comparison of continuous variables, the Student’s 