All studies included suffered from various methodological shortcomings such as small sample sizes and non-random sampling.
Future studies should avoid methodological shortcomings such as absence of lead-in period, undefined training cycle or players' recent training history.
Methodological shortcomings such as inadequate allocation concealment, small sample size and inadequate blinding require further large studies that incorporate methodological rigor.
Such inconsistency among clinical studies may be ascribed to the influence of depression on ghrelin levels or methodological shortcomings, such as small sample size and the lack of control for potential confounders including BMI and lifestyle factors.
Unfortunately, many of the studies on imaging for acute abdominal pain have evaluated investigations in isolation, and several show methodological shortcomings such as retrospective collection of data or differential verification of test results.
However, all these studies, which were exclusively conducted before 1980, have serious methodological shortcomings such as small sample sizes, vaguely defined outcome criteria, no systematic assessment of psychopathology, no recording of medication, and no intention-to-treat analysis.
Previous studies on cocaine use suffer from numerous methodological shortcomings and confounds, such as inadequate screening procedures and controls for age, race, gender distribution, and level of intelligence, lack of a control group, and more, which makes it difficult to draw firm conclusions from the available data (see [3], [8] for a review).
As reviewed recently, the studies published so far on T2D subjects have a number of methodological limitations and shortcomings, such as small sample sizes, heterogeneous regarding dose and formulation of vitamin D treatment, duration, inclusion exclusion criteria and study populations.
However, we found that significant methodological shortcomings in studies reporting such interventions remain and additional evidence of impact on patient outcomes is needed.
However, as there were several serious shortcomings such as methodological issues related to retrospectively collected data, rough estimation of exposure by a dichotomous smoke exposure variable and statistical issues related to power, no final statement on causality was possible [ 45].
Notwithstanding, evidence on the effectiveness of community based Aedes control is weak and controversial owing to, among others, methodological shortcomings in the published studies, such as short follow-up periods, questionable study designs, and evaluation of outcomes by proxy indicators.
