Statistical analysis
All encoded data were inserted into SPSS version 25 software (IBM SPSS Inc., Armonk, NY, USA). For data analysis, the mean quantitative variables such as age, BILAG score, and SLEDAI score and the frequency of qualitative data such as sex were calculated. The Kolmogorov-Smirnov test investigated the normal distribution of scale data. Comparison of quantitative variables between the two groups was performed by independent 