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Adjusted mean (95% confidence interval) of Positive and Negative Syndrome Scale (PANSS) negative factor score according to iron deficiency. Adjustment for sex, inpatient status, duration of untreated psychosis, duration of treatment, and scores on the Social Occupational Functioning Assessment Scale, Calgary Depression Scale for Schizophrenia, and PANSS positive and cognitive factors. F = 5.471, p-value = 0.021.
