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Relationship between glutamate levels and the percentage change in PANSS positive (r = 0.061, p = 0.777), negative (r = 0.144, p = 0.502), general (r = 0.110, p = 0.607), and total scores (r = 0.078, p = 0.719), with 95% confidence intervals derived from the line of best fit. Individuals are stratified by medication status, antipsychotic naïve (circle), antipsychotic free (square), minimal treatment (triangle).
