Sentence examples for studies failed to control from inspiring English sources

Two studies failed to control for any potential confounders, thereby limiting the comparability of the study groups (18, 21).

These studies failed to control nutrients intake such as vitamins B, which may reduce symptoms of depression, and this can confound the association between physical activity and depression.

In addition, some studies failed to control for time of day, which is problematic given the marked diurnal rhythm of cortisol (13).

Several different methods were used to quantify and report variation, some studies failed to control for confounders and used naive statistical methods which limited their utility.

The few available controlled clinical challenge studies had inconsistent findings on respiratory effects of fragrance exposure in sensitive populations, and many studies failed to control for the possible influence of odor perception.

While electrophysiological studies of tinnitus have been reported in passive, awake animals, these studies fail to control for attentional mechanisms likely to play a role in the perception of tinnitus.

Some studies fail to control for important confounders or to adjust for clustering, while others inappropriately include variables on the causal pathway, all of which makes results very hard to compare.

38 The Qureshi et al study population is representative of the general population; however, the study failed to control for potential dietary confounders and relied on self-report of diabetic status.

By contrast, low income was associated with a low probability of patients in northeast England having gone through surgery within 18 months of their initial visit to a primary care doctor with a complaint of knee pain [ 48], but this evidence is of limited value since the study failed to control for confounders.

Although removal of CVCs has been advocated as an adjunctive strategy for treating patients with candidaemia, most studies have failed to control for important variables, e.g., the severity of illness and persistence of neutropenia.

To date, most studies have failed to control for item overlap [ 4].