Table 4:

Predictors of preference concordant outcomes that achieved significance in multivariable models controlling for physician type (Sensitivity Analysis).

Model	Predictor	Primary Outcome			Secondary Outcomes
		Intubate			ICU		DNR/DNI		CMO
Step	Code	OR	95% CI	c-stat	OR	95% CI	OR	95% CI	OR	95% CI
1				0.976
	SC23	0.253	0.096, 0.668		0.816	0.689, 0.967	1.764	1.269, 2.451	ns
	SC30	0.327	0.103, 1.042		ns		ns		ns
2				0.975
	SC27	ns			ns		1.408	1.134, 1.749	ns
	SC30	0.358	0.128, 0.999		ns		ns		ns
	SC31	0.201	0.054, 0.748		0.8	0.643, 0.994	ns		1.232	1.031, 1.473
3				0.975
	SC13	ns			ns		1.425	1.129, 1.798	ns
	SC14	ns			0.421	0.256, 0.694	3.043	1.300, 7.126	ns
	SC17	ns			ns		ns		3.75	1.216, 11.564
	SC30	0.358	0.128, 0.999		ns		ns		ns
	SC31	0.201	0.054, 0.748		0.8	0.643, 0.994	ns		1.232	1.031, 1.473

Note: The Step 1 model includes SC9, SC13, SC14, SC17, SC23, SC27, SC30, SC31, and K52 with Physician Type as a covariate. The step 2 model is identical except that SC23 is eliminated. Step 3 eliminates both SC23 and SC27. Predictor variables are modeled as integer counts indicating the total number of times a particular code was applied to text from a specific simulation. Because SC19 and SC28 were not significant univariate predictors of any of these outcomes, they were omitted from these models. Coefficients are presented for only those variables achieving statsistical significance; model coefficients for all variables are available on request to the senior author.

Abbreviations: Odds Ratio (OR); Confidence Interval (CI); c-statistic (c-stat); Intensive Care Unit (ICU); Do not resuscitate/Do not intubate (DNR/DNI); Do Comfort Measures Only (CMO); not statistically significant (ns).