Although we investigated several potential confounders, residual confounding is still possible, but we presume this to be limited as well.
Although we included a number of covariates in our analyses to adjust for several potential confounders, residual confounding from unmeasured covariates may still exist.
Third, we did not account for several potential confounders, such as severities (the Injury Severity Score, the Revised Trauma Score, etc) of cases and training levels of physicians.
However, we were able to adjust for several potential confounders, including cardiovascular risk, severity of illness on presentation and practice management.
Despite adjusting risk estimates for several potential confounders and mediators, we cannot rule out residual confounding.
For example, although we adjusted for several potential confounders, we cannot exclude the possibility of residual confounding.
A further strength is the complete study sample and that several potential confounders were taken into account, even though unmeasured or residual confounding cannot be ruled out.
Although we adjusted for several potential confounders in the multivariable analyses, we cannot exclude the possibility of uncontrolled confounding.
We adjusted for several potential confounders, but our results still may be biased by residual or uncontrolled confounding by factors such as chemical exposures.
All the epidemiologic studies in children adjusted for several potential confounders, as shown in Table 2, but there could also be some residual confounding.
In the present work, we compared two groups based on the Defence Style Questionnaire (DSQ) [15], resulting in the identification of several potential confounders.
