highly significantP < 0.00001
Subgroup correlation of HKA vs MPTA within these groups using Pearson’s correlation test showed a lack of significant correlation in the HKA 0 - 3 group (R = 0.1806, p = 0.409576) and a highly significant correlation in the HKA > 3 group (R = -0.5594, P < 0.00001).