Figure 1

Using the patient characteristics shown to predict GlideScope use, a propensity scoring algorithm was used to match the groups. A) The distribution of scores in the GlideScope group. B) The Control (DL) group’s raw data showed a strong skewing toward lower propensity scores as expected (not shown), but the displayed propensity score distribution after matching was similar to the GS group’s. C) The standardized differences (Cohen’s d) were reduced for all included variables.