Among the subset of 139 patients who had a central venous catheter, receipt of nafcillin or cefazolin was protective against mortality after statistically adjusting for the propensity score (adjusted HR: 0.26; 95% CI: 0.10, 0.69).
Another strategy to adjust for the propensity score is weighting.
There are two different sets of strategies to adjust for the propensity score.
In addition, we will examine the time to first invasive intervention using survival analysis with a Cox proportional hazards model and adjust for the propensity score for early imaging.
To adjust for the propensity to consult a GP, a variable counting non-infection-related consultations in the first year of life was added to the conditional logistic regression model.
When the association between the type of cholecystectomy and 30-day complications was adjusted with the propensity adjustment method, the results were consistent with those obtained with the risk-adjustment procedure (LC vs OC OR=0.61 and OR=0.52, respectively, for the two outcomes).
It is, therefore, important to check the balance between the samples after adjusting for the propensity score.
Rosenbaum and Rubin's (1983) key insight is that adjusting for the propensity score removes bias from all observed confounding variables.
The analysis is performed by first generating a propensity score estimating the probability of treatment assignment then performing a logistic regression adjusted for the propensity score.
To evaluate the presence of moral hazard, adjusted for the propensity to have self-purchased insurance policies, employer-based medical benefits, and welfare-associated medical benefits in Hong Kong.
