Table 13: Patients distribution by level of "Test_a" and geographical area.

Geographical Area
North_West North_East Centre South_Islands Total
0-3 Mild 36.0% 44.2% 30.5% 29.6% 851
4-6 Moderate 34.1% 23.6% 36.0% 39.0% 857
7-10 Severe 29.9% 32.2% 33.5% 31.4% 792
Total 625 450 600 825 2500

Significant χ2 Test of the association between the two variables P-value = 0.000.