extremely significantp =0.000
The increase was extremely significant for the deformity angle (initial vs. 6th month, p =0.000; 6th month vs. 24th month, p =0.000) and kyphotic angle (initial vs. 6th month, p =0.003; 6th month vs. 24th month, p =0.000) in the thoracic and thoracolumbar regions during the first 2 years of the disease process.