投稿一个月，收到大修通知，四个审稿人提了很多问题，但审稿者4提出的两个问题我一直没搞懂，希望得到大神帮助，感激不尽。（我的研究是关于骨科临床方面的，对比的是两种手术技术）

审稿者4 

1. In material session, 87 samples are neither plenty enough nor random.  
3. The results session lists experimental data in detail, but How come only shows P values ? Why did you talk about Chi-square / Fisher’s / Paired-Samples / Independent -Sample / Mann-Whitney U / Wilcoxcon in sub-session of 5. Statistical analysis ? 

1. 样本量太少的问题怎么回答比较合适，让我短时间增加样本量也来不及啊。

3. 第3条的意思没看懂，求大神答疑，我在统计部分的描述是这样的：

5. Statistical analysis

All data analyses were conducted using SPSS software, version 25.0(IBM, Armonk, NY, USA). Chi-square test and Fisher’s exact test were utilized to analyse differences in categorical variables. Categorical variables were presented with number or percentage values. Paired-Samples T test, Independent-Sample T test, Mann-Whitney U test and Wilcoxcon test were used to compare continuous variables. Continuous variables were showed as mean or standard deviation. All statistical methods were listed in the charts. A p-value less than 0.05 was deemed to indicate statistical significance.