Box plot showing the distribution of SIR values of the two groups with the time of implant usage.

Box plot explanation: upper horizontal line of box, 75th percentile; lower horizontal line of box, 25th percentile; horizontal bar within box, median; upper horizontal bar outside box, 90th percentile; lower horizontal bar outside box, 10th percentile. Circles represent outliers.

箱线图说明：箱体上方水平线为75百分位数（75th percentile）；箱体下方水平线为25百分位数（25th percentile）；箱体内的水平横线为中位数（median）；箱体外侧上方水平短线为90百分位数（90th percentile）；箱体外侧下方水平短线为10百分位数（10th percentile）；圆形符号代表异常值（outliers）。