highly significantp value < 0.001
Meanwhile, geographic area revealed significant differences; in this case, χ 2 components showed highly significant ( p value < 0.001) lower values for NFC in Southern Italy, QR-B in Central Italy, and DAB in Northern Italy, and highly significant ( p value < 0.001) higher values for QR-B in Southern Italy and DAB in Central Italy. 3.2.