Following stratification and adjustment, seasonal variations in mortality appeared more pronounced in northern temperate zones, whereas the variations in mortality in tropical zones did not reach significance, although the tendency to a higher winter mortality was also observed in tropical regions.
This measurement permits adjustment for variations in amplification efficiency between samples.
We described each dose adjustment by variations with regard to the ongoing dose.
This study demonstrates that, after adjustment for variations in case-mix and deprivation, significant differences in outcome among hospitals following resection for colorectal cancer persist.
Due to the reasons mentioned, we therefore recommend calibration weighting for the adjustment of variations in response frequencies in large-scale surveys.
With a more advanced risk adjustment approach, variations in the newer HCQI scores are likely a more accurate reflection of the impact of services provided and the overall effectiveness of home care services.
Such a measure would have allowed a more comparable estimation of cognition scores between groups with different educational levels by enabling some adjustment for variations in test performance related to education rather than to underlying cognitive impairment.
Since adjustment for variations in health need associated with socio-economic inequality might be incomplete, we additionally adjusted for the proportion of the population with limiting long term illness; the association between GP supply and mortality was then attenuated (mean difference -3.3, -6.7 to 0.1, P = 0.060).
Given sufficient seasonal adjustment, all variation in the hospitalization series explained by seasonality is removed; any remaining variation must be due to other factors or random noise.
Similarly, as it is an issue in all meta-analyses of observational studies, extracted predictors of NH admission were derived from studies that included models with varying numbers of adjusting covariates; variations in adjustment across predictive models pose challenges to standardization when pooling estimates in meta-analyses.
