Hospital nursing factors associated with decreased odds of mortality in older adult medicare surgical patients with depression.

While the main effect of depression is only marginally significant, and the main effect of staffing is nil, the significant interaction in the model implies that for depressed patients each additional patient per nurse in the hospitals in which they were cared for was associated with a 4% increase in their odds of mortality [OR = 1.04, CI = (0.1.01–1.09), p < 0.01].

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