Differences

This shows you the differences between two versions of the page.

--- wiki:guide:research:screen [2022/05/10 20:54]
tiffany [Should You Exclude Follow-up (or Post-Hoc) Studies?]
+++ wiki:guide:research:screen [2022/08/11 20:06] (current)
kevinkallmes
@@ Line 1: / Line 1: @@
-====== Screening Your References (Study Selection) ======
+====== Selecting Your Studies (Screening) ======
 After running your search through one or more databases, the next step is to screen through the results to decide which studies you want to include.
@@ Line 5: / Line 5: @@
 ===== Selecting Exclusion Criteria =====
-Exclusion criteria should be determined before screening begins. Common exclusion criteria include publication prior to a specific date, articles not written in English, the wrong type of article (meta-analysis/systematic review, editorial, correspondence, letter to the editor, abstracts), the wrong type of study (in vitro, in vivo, retrospective, cohort study, case series, case study), and too few patients (for example, fewer than 10).
+Exclusion criteria should be determined before screening begins. Common exclusion reasons include the following:
+  * Publications prior to a specific date (for instance, January 1, 2000)
+  * Articles not written in English
+  * The wrong type of article (meta-analysis/systematic review, editorial, correspondence, letter to the editor, abstracts, protocol)
+  * The wrong type of study (in vitro and in vivo studies, retrospective study, cohort study, case series, case study)
+  * Too few patients (for example, fewer than 10).
-Additional exclusion criteria often relate to PICO. Examples include the following: incorrect target population for the study, an intervention of interest that was not performed at the time of interest, single-arm (no comparator) studies, and no reporting of outcomes of interest.
+Additional exclusion criteria often relate to [[https://wiki.nested-knowledge.com/doku.php?id=wiki:autolit:search:optimize|PICO]]. The study under consideration may involve the wrong population, interventions, comparators, and outcomes.
 ----
 ===== Screening Steps =====
-* Before going through each study, begin by removing any duplicates with the Nested Knowledge software.
+* Before going through each study, begin by removing any duplicates with the [[https://wiki.nested-knowledge.com/doku.php?id=wiki:autolit:screening:deduplication&s[]=duplicate|Nested Knowledge software]].
 * When reading the title and abstract to determine whether a study should be included, check each of the inclusion and exclusion criteria and the elements of PICO. If there are not enough details in the abstract, mark this study for full-text review. For studies that don’t meet the inclusion criteria, mark them as excluded and note the reason they were excluded. Be sure to note any recurring exclusion reasons that were not determined beforehand.
@@ Line 19: / Line 24: @@
 * When looking through a PDF of a study, use “Ctrl F” to find specific words or phrases to quickly locate the elements of PICO to quickly find essential information. The remaining included studies will go on to have their data tagged and extracted for analysis.
+See the visual here for an overview of where to find screening-related information in underlying studies:
+{{:wiki:guide:research:screenshot_2022-08-11_150554.png|}}
 ----
-===== Should You Exclude Follow-up (or Post-Hoc) Studies? =====
+===== Should You Exclude Follow-up Studies? =====
-It is generally better to include the primary study over post-hoc and follow-up studies. However, there are times when the post-hoc study is more relevant than the primary study. As long as you are only collecting data on each patient once, the follow-up study may be included.
+It is generally better to include the primary study over follow-up (or post-hoc) studies. However, there are times when the follow-up study is more relevant than the primary study. As long as you are only collecting data on each patient once, the follow-up study should be included.
 ----
+===== Is Dual Screening Necessary? =====
-===== Dual Screening =====
+Dual screening is a process where two reviewers independently screen the search results to make decisions about whether to include or exclude articles. Discrepancies are usually discussed before a final decision is made. Although dual screening may take more time, several studies have documented its advantage.<sup> 1 2 3 </sup>
-Dual screening is a process where two reviewers independently screen the search results making decisions about whether to include or exclude articles. Discrepancies are usually discussed before a final decision is made. Although this may take more time, the advantage is greater accuracy.
-The choice of whether to dual-screen or not should be discussed by the team. One study showed that single-reviewer abstract screening missed 13% of relevant studies, while dual-reviewer screening missed 3%.<sup>1 </sup>   Another analysis found a total reviewer error rate (false inclusion and false exclusion) of 10.76%.<sup>2</sup>
+One study showed that single-reviewer abstract screening missed 13% of relevant studies, while dual-reviewer screening missed only 3%.<sup>1 </sup>   Another analysis found a total reviewer error rate (false inclusion and false exclusion) of 10.76%.<sup>2</sup> The choice of whether to dual-screen or not should be discussed by the team.
-The level of experience of the reviewer can help determine whether dual screening is necessary. A study by Waffenschmidt et al. found that the median proportion of missed studies that would have been included by two independent reviewers reaching consensus was 3% (range: 0 to 21%) for experienced reviewers and 13% for less experienced reviewers (range: 0 to 58%). A clearly defined research question is helpful in reducing the number of missed studies.<sup>3</sup> [[https://blog.evidencepartners.com/dual-screening-in-your-systematic-review-process-is-it-worth-the-time|This article provides some alternatives to dual screening.]]
+[[https://blog.evidencepartners.com/dual-screening-in-your-systematic-review-process-is-it-worth-the-time|This article]] provides some alternatives to dual screening.
 ----

Nested Knowledge

User Tools

Site Tools

Differences

Page Tools