Table 3.

MLR of Accuracy of Spousal Surrogates on Spouse’s End-of-Life Planning: Cognitive Impairment Scenario

	Model 1						Model 2
	Overtreatment		Don’t Know (vs Accurate)		Undertreatment		Overtreatment		Don’t Know (vs Accurate)		Undertreatment
	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI	OR	95% CI
Had discussion with surrogate	0.94	0.63–1.40	0.57***	0.43–0.78	1.01	0.64–1.59	0.91	0.61–1.37	0.56***	0.42–0.76	1.01	0.64–1.60
Had discussion with other	1.06	0.65–1.72	0.52***	0.35–0.76	0.86	0.49–1.52	0.99	0.60–1.63	0.50***	0.33–0.73	0.82	0.46–1.46
Surrogate is DPAHC	0.76	0.45–1.30	0.75	0.49–1.15	0.94	0.50–1.76	0.81	0.47–1.39	0.77	0.50–1.18	0.92	0.49–1.72
Other is DPAHC	0.66	0.38–1.15	0.82	0.54–1.23	1.41	0.77–2.59	0.68	0.38–1.20	0.81	0.53–1.23	1.34	0.73–2.46
Gave surrogate living will	0.79	0.45–1.38	0.74	0.47–1.15	0.77	0.41–1.46	0.81	0.46–1.42	0.75	0.48–1.17	0.79	0.42–1.49
Gave other living will	0.76	0.45–1.28	0.89	0.60–1.32	0.56	0.30–1.04	0.77	0.45–1.33	0.92	0.62–1.37	0.57	0.31–1.07

Notes: MLR = multinomial logistic regression; N = 2,636. DPAHC = durable power of attorney for health care; OR = odds ratio; CI = confidence interval.

Model 2 controls for surrogate gender, educational attainment, religious affiliation, projection of spouse life expectancy, death avoidance, experience with the death of a parent or spouse, and spouse life-threatening illness. Values for Models 1 and 2 are as follows: overtreatment, don’t know, and undertreatment, n = 171, 301, and 134, respectively. For Model 1, χ² = 61.52, df = 18; for Model 2, χ² = 129.08, df = 54.

^*p ≤ .05

^**p ≤ .01

^***p ≤ .001.