The R code for the adjusted procedure is provided in Additional file 1.
To account for multiple testing errors, a False Discovery Rate adjusted (FDR-adjusted) procedure was employed [ 25].
For PTCA (and CARP), but not CABG, there was a socioeconomic gradient in age-adjusted procedure rates favouring high SES patients (test for trend, p =.001,.004 and.655, for PTCA, CARP and CABG, respectively).
This procedure led to an adjusted and continuous measure of prior knowledge, which is strongly associated with the students' WBT scores (r = 0.93**) but independent from their CFT scores (r = 0.00).
If significant precipitation or dissolution of calcium due to the effect of carbon dioxide (CO2), bicarbonate (HCO3-) and total salinity (ECw) is suspected, an alternative procedure for calculating an Adjusted Sodium Adsorption Ratio, SARadj.
Owing to the small sample sizes in most of the included trials, we calculated an adjusted ES in accordance with a recommended procedure.
In an adjusted model for age, EuroSCORE, type of surgical procedure, LVEF and cardiopulmonary bypass time, the exposure to RBC transfusion was associated with an elevated LOS.
A multivariable analysis for this composite outcome gives an adjusted hazard ratio that slightly favours the cemented procedure (0.94, 95% confidence interval 0.91 to 0.97).
Adjustment for health status and use of culture-/language-adjusted procedures during the data collection were negatively related to reporting significant differences in the studies.
Therefore, an adjusted training intensity was calculated by dividing the number of procedures performed by the time period of continuous training.
