Sentence examples for the absence of randomization from inspiring English sources

1) the absence of randomization; 2) the lack of a control group; and 3) the use of aggregate input and output variables.

The absence of randomization in this trial introduced a risk of selection bias [20], and the predominantly female cohorts evaluated in the review limit extrapolation of the findings to males.

Conclusion Despite its small size, and the absence of randomization, the present study suggests that nasotracheal intubation improves the comfort and the tolerance of tracheal intubation and is not associated to higher rates of VAP.

A study design limitation is the absence of randomization to select a representative sample of GPs.

The absence of randomization could have also influenced the patient's allocation to a specific physical therapist.

In the absence of randomization, however, the possibility of residual confounding may never be ruled out.

Although this study is obviously limited because of the absence of patient randomization, its results confirm the clinical impression of an improvement in the primary headache in patients with PT in terms of improvement in VAS, reduction in the number of attacks/month, and the consumption of analgesics/month.

If this type of matching were perfectly successful, then the absence of formal randomization would become irrelevant.

The absence of a randomization procedure and a control group makes this design vulnerable to many forms of bias [ 36].

In the absence of real randomization, the approach involves creating a system of equations which, under certain assumptions, can estimate the counterfactual set of outcomes that each subject would have experienced if (s)he had experienced exposures other than the one actually received.

1) absence of randomization; 2) the absence of pre-intervention data; 3) the lack of control for the quality of the data in the 202 health centers without PBF.