Treatment was associated with a marginally statistically significant decline in psychological distress, as measured by the 6-item Kessler Psychological Distress Scale, relative to the control group (score change = −0.30 points, 95% confidence interval (CI): −0.63, 0.03; P = 0.072).
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Effect of Expanding the Earned Income Tax Credit to Americans Without Dependent Children on Psychological Distress.
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