“
结果”部分经常需要比较样本和对照,或者比较某个时间点前后的结果,所以有必要了解陈述比较时一些常犯错误。其中一些也包括在“克服语言障碍”一章的注意
事项中。最重要的是“同类事物间才能做比较”。例如,有这样一个句子:“Expression levels of p53 in smokers
were compared with non-smokers” 就应该改成“Expression levels of p53 in
smokers were compared with those in non-smokers”。这里的一个关键是“were
compared” 这个短语(其他句子中也可能是 “compared with”)的位置。如果这个短语位于被比较双方
(如此例中:吸烟者的p53 levels 和 不吸烟者的p53
levels)之间,那么比较的双方都必须要有足够的信息来清楚界定到底比较的是什么。也可以把这个短语放在被比较双方之前或之后,例
如:“Expression levels of p53 in smokers and non-smokers were
compared”。叙述比较的另一个问题是,比较性的词语如“more”,“higher”和
“faster”等,后面需要跟一个”than”开始的从句来解释是比谁多、高或者快。比如,“transgenic mice showed
higher levels of cortisol”这个句子中是比谁高就不明确,因此应该加上“than control mice”。
示例 下图节选自《The Journal of Clinical Investigation》上一篇论文的“结果”部分(doi:10.1172/JCI37155;经同意转载)。其中显示了“结果”部分的一些要素。
The
results section is possibly the most important section in your paper.
In this section you will describe the main findings of your research,
which is what everyone who is going to read your paper wants to know
about. Also, whatever findings you obtained will determine how the
introduction and discussion sections are framed, what target journals
you can consider, and what direction(s) your subsequent research needs
to take.
The easiest way to approach writing a results section
is to consider all of your findings and what they mean or suggest. You
will already have analyzed your data and probably also generated a
number of figures and/or tables to show it in a clear and concise
manner. Later tips in this series describe some important
considerations to keep in mind when preparing display items and
performing statistical analyses, so I won’t go into much detail on
those processes here. However, it is important to remember that
graphics are important components of the results section, and
therefore, that there should be no redundancies or duplications among
the text, figures and tables. Put simply, if something can be more
clearly shown in a figure or table than explained in the text, then use
a graphic and refer to it briefly in the text; if something can be
easily summarized with text, then there is no need for an additional
graphic showing the same thing.
Once you have a clear idea of
what results you want to include and what each of them shows, you
should assemble them in a logical order to make a ‘story’. You will
have already described your hypothesis or research question(s) in the
introduction; use the results section to lay out all of the evidence
you have gathered, building up a solid case to support your hypothesis
or to exclude alternative explanations. Each different finding should
have its own subsection, beginning with a subheading in the present
tense. These subheadings should match those in the methods section and
the headings used in figure/table legends. The results themselves
should be described in the past tense, like the methods. The more types
of evidence you can provide for a given hypothesis (and the less
ambiguous these are), the more irrefutable your conclusions can be.
Resist the urge to discuss the implications of findings or go into
detail about what they mean—that is what the discussion section is for.
Rather, present the evidence and let the reader draw their own
conclusions.
Results sections frequently involve comparisons
between a test sample and a control, or between before and after
time-points, so you should be aware of some common errors made when
describing comparative results. Some of these have already been
described in the tip “Overcoming the language barrier”. It is
particularly important to compare “like with like”. For example? the
sentence “Expression levels of p53 in smokers were compared with
non-smokers” should actually be “Expression levels of p53 in smokers
were compared with those in non-smokers”. The critical point here is
the placement of “were compared” (or in other situations, “compared
with”): if the comparing term appears between the words describing the
two items being compared (here, p53 levels in smokers and p53 levels in
non-smokers), then enough information needs to be provided either side
of the comparative term to make it absolutely clear what is being
compared. An alternative to this is to place the comparative term
before or after the words describing the items being compared: for
example, “Expression levels of p53 in smokers and non-smokers were
compared”. While still on the subject of comparisons, it is important
to remember that relative terms, such as “more”, “higher” and “faster”,
require an accompanying “than” clause to explain what this change is
relative to. For example, in the sentence “transgenic mice showed
higher levels of cortisol” it is unclear what these levels were higher
than; thus, a “than clause”, such as “than control mice”, is required.
Example The
figure below, showing a couple of excerpts from the results section of
paper published in The Journal of Clinical Investigation
(doi:10.1172/JCI37155; reproduced with permission), shows some of the
important components of a results section.
Checklist 1. Use figures and tables to summarize data except where such data can be easily summarized in the text 2. Describe results in the past tense 3. Compare like with like 4. Do not duplicate data among figures, tables and text 5. Show the results of statistical analyses, for example, p values, in the text.