Table 3 Characteristics and results of the included studies
Author, year | Key question | Study design | Risk of bias | Aim | N of analyzed SRs, studies, publications | Abstract and/or full-text screening | N of reviewers involved | Proportion of falsely excluded studies/publications by characteristic | Proportion of falsely excluded studies that could be recovered | |
|---|---|---|---|---|---|---|---|---|---|---|
Busse 2014 [16] | KQ 2 | Methods study with a case-study design | Low | To explore the extent to which English-speaking reviewers can differentiate eligible from ineligible foreign-language articles in a systematic review of all treatments for fibromyalgia | 1 SR, 53 studies | Full-text screening | 16 | Single screening: NR | Dual screening: Non-English language: Overall: 6/53 (11.3%) German: 2/16 (12.5%) French: 1/4 (25.0%) Turkish: 1/9 (11.1%) Chinese: 1/7 (14.3%) Korean: 1/1 (100%) Italian: 0/5 (0%) Spanish: 0/5 (0%) Portuguese: 0/3 (0%) Dutch: 0/1 (0%) Russian: 0/1 (0%) Polish: 0/1 (0%) | NR |
KQ 1, KQ 2 | Methods study with a case-study design | High | To track eligible articles identified by checking references lists and to determine which of those had also been found through database searches, but had been screened out by the review authors | 1 SR, 119 studies, 134 publications | Abstract screening | 8 | Single screening: NR | Dual screening: Abstract content details: 11/134 publications (8.2%) due to uninformative titles and abstracts of the bibliographic record | 11/11 publications (100%) through reference list checking 0/11 publications through contacting key authors, reference list checking, forward citation tracking | |
Rathbone 2017 [15] | KQ 2 | Methods study with a case-series design | High | To evaluate the feasibility of PICo-based title-only screening for scoping searches and rapid reviews by measuring the reduction in screening effort and the maintenance of recall of relevant records | 10 SRs, 211 studies | Abstract screening | 5 | Single screening: Abstract content details: 1/211 (0.005%) due to an uninformative title | Dual screening: NR | NR |