GAD1 and schizophrenia: The type of PEDs abused by the athletes had no association with MDD (χ2(df) = 8.97(10), p = 0.56), schizophrenia (χ2(df) = 0.38(10), p = 1.00), and GAD (χ2(df) = 7.30(10), p = 2.00), and the overall prevalence of psychiatric disorders (χ2(df) = 8.03(10), p = 0.16).