Scores are assigned to the pre- and post-treatment states, reflecting the deviation from an ideal alignment and bite for the patient. The difference in pre- and post-treatment scores will indicate the degree of improvement. A higher percentage difference reflects a higher degree of improvement in alignment and bite. As patient outcomes may be influenced by many factors, it has been recommended that 75% of completed cases should exhibit an improvement greater than 70%[1].
In NDCS, PAR is tracked on a yearly basis based on a sampling of cases. Results show that at least 90% improvement is achieved in 100% of completed cases evaluated. Year-on-year average is tabulated below.
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