Sentence examples for using a historical control from inspiring English sources

First of all, results obtained with an observational study design using a historical control group generally require further validation by a randomized controlled trial.

This pilot study used a pre post design using a historical control.

We acknowledge the potential limitations of using a historical control from a geographically discrete population.

Krinsley [ 7] found a beneficial effect of glucose regulation on mortality in a study using a historical control group.

Krinsley [ 23] found a beneficial effect of glucose regulation (mean BG 7.2 mmol/l; <1% hypoglycaemic episodes) on mortality, using a historical control group.

The present study is subject to the limitations inherent in using a historical control group, and we acknowledge that a randomised prospective design would strengthen our conclusions.

Only three studies have investigated patient-targeted interventions, of which one used a historical control group and two were randomised controlled trials (RCTs).

Our study is limited by the fact that we used a historical control group.

Although the use of competing risk models in the multivariate analysis ensured the strength of our study, the major limitation is the design of the study, which used a historical control group, consequently implying limited matching between the two study groups.

This study used a historical, controlled (paired), and partially blinded design to compare the ratio of respiratory distress events among those residing in the path of sugar cane burn smoke to those residing elsewhere on Maui on burn versus non-burn days.

We excluded Gärden 2013 because it was not a RCT; it used an historical control group as comparator (Gärden 2013).