We then added variables to control for confounding: clinical measures (BMI, lung function), smoking, and the DI.
The ability of the self-controlled case series method to control for confounding both measured and unmeasured will be of particular practical value in pharmacoepidemiology.
Logistic regression analyses were employed to control for confounding demographics and measure independent relationships between childhood violence and happiness and adult MWB (SWEMWBS individual components and overall score), LS, life worth and trust.
The high accuracy supports the use of ICD-10 codes in future research to control for confounding by comorbidity as measured by the Charlson comorbidity index.
The agreement was low for the remaining items (description of study objective, description and appropriateness of the design, method of subject selection, definition of outcome measure, control for confounding, exact p-values or confidence intervals, reporting of results, and conclusions supported by the results).
69 Assuming that confounding variables do not change over time, this approach enables reasonable control for confounding, as household differences affecting the postintervention outcome measures should also affect the baseline measures of the same outcomes.
PCB-153 concentrations in cord plasma and Hg concentrations in cord and child blood samples were not associated with any of the behavioral measures after statistical control for confounding variables (all p-values > 0.10).
The study design could not control for confounding that resulted from unmeasured or difficult to measure aspects of the clinical decisions for discharge placement and rehabilitation LOS.
As in any observational study, we must assume that the variables that we measured were sufficient to control for confounding.
Furthermore, future research on unmet need and health services use should include measures of psychological distress to control for confounding and improve the predictive ability of statistical models.
