Moreover, stratified analyses on timing of gestation (during first trimester versus after first trimester) were performed when studying the association between nausea and comorbidity.
POCUS may yield high negative predictive value for DVT evaluation, avoid unnecessary anticoagulant treatment, and may be performed when radiology studies are not available with good accuracy [62, 63].
As Green [ 2] points out about meta-analyses: 'Meta-analysis should only be performed when the studies are similar with respect to population, outcome and intervention.' The article of Moharaj and Metaxa does not follow these simple principles.
However, the PE method can only be performed when the number of studies is larger than five, whereas many meta-analyses are smaller [ 15].
Follow up sleep studies should be performed when clinically indicated.
Further in vivo studies should be performed when our dual-wavelength excitation autofluorescence endoscopy technique, which operators can easily perform in real-time, is developed.
Intensive reading of the full text was performed when the studies met the inclusion criteria.
The one-way sensitivity analysis was performed when one single study was excluded each time, and the new pooled results reflect the influence of the study deleted to the overall OR.
Inter-study heterogeneity was assessed by using the chi-square test and subgroup analysis was performed when high heterogeneity between studies existed.
A meta-analysis was performed when at least 3 studies provided data.
