Fourth, because this study compared the two studied groups regarding their functions, symptoms, pain and results on four clinical tests, we were concerned about multiplicity issues.
Because few studies have been done, this study compared maternal disease characteristics and maternal/neonatal clinical outcomes of twin and singleton pregnancies complicated by severe preeclampsia.
The AWARD-4 trial was also excluded from the review because the study compared dulaglutide against glargine, both combined with mealtime insulin lispro with or without metformin in type 2 diabetes uncontrolled on conventional insulin therapy.
Step 1 of the procedure required a more elaborate treatment than that used in the previous analysis because the present study compares data from three surveys rather than reporting just one.
But because these studies compared the new drugs to dummy pills, and not to each other, their relative value with older drugs was unknown.
However, she argued that because the studies compared Northern European flight crews to general populations in Northern Europe, there shouldn't be a study bias — unless, of course, "fair skinned individuals were more likely to be hired in flight occupations compared with control occupations".
From the individual-level interventions, we excluded 18 because outcomes were measured on the same day as the delivery of the intervention, 7 because they were not randomised controlled trials and 5 because the studies compared interventions with other interventions, rather than no intervention or usual care.
Because no study compared acupuncture with sham acupuncture, this makes outcome assessment blinding even more crucial.
Because this study simply compared cloud cover with the water spectral feature, "you cannot make a robust claim," Madhusudhan says.
Because this study only compared those with a BMI of 24 kg/m2 or higher to those with a BMI under 24 kg/m2, it was impossible to evaluate the effect of lower BMIs on SA.
