This situation is likely because this group only represents 20% of all residents entering their PGY4 year, less than half of the number of residents entering procedure-based specialties.
Secondly, there was lack of uniformity when it came to peripheral hospitals attached to training hospitals, with some trainees entering procedures performed at those sites separately e.g. entries were present for Chapel Allerton Hospital attached to Leeds General Infirmary but no entries were found for St . Lukes Hospital attached with Bradford Royal Infirmary.
Multivariable analysis was performed using a Cox proportional hazards model with an enter procedure.
Unconditional logistic regression analysis with enter procedure was used to select the predictors and adjust confounding variables.
Predictors of higher peak strain were assessed in multiple linear regression analyses using an enter procedure with collinearity diagnostics.
Multivariable analyses were performed using a two-sided Cox proportional hazards model with enter procedure of all risk predictors considered (Table 2).
A logistic regression was carried out to determine the association between comorbidities and use of strong opiates (enter procedure and Wald statistics).
Thus, the Hosmer Lemeshow goodness-of-fit and Omnibus tests of model coefficients with enter procedure were used to test for the model fitness.
A stepwise regression selection procedure was performed to build a compact model (Fig. 5C) with two factors finally entered (R=0.678; P<0.05) to avoid high R values using the enter procedure due to overfitting with a high number of factors.
All determinants that had a bivariate correlation with the outcome measures at p < 0.20, were included in the multiple linear regression analysis with a stepwise procedure, followed by an enter procedure.
Independent covariates of reduction in EF and MWS from baseline to the last study visit were identified in multivariate linear regression analyses, run with an enter procedure and collinearity diagnostics.
