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. 2021 Feb 17;10(4):806. doi: 10.3390/jcm10040806

Table 4.

Health profile change over time according to Paretian classification for profiles changes, for total population and patients with and without post-concussion syndrome (PCS).

Paretian Classification of Health Change Total No PCS PCS
No problems 20.7% 24.7% 2.6%
No change 8.9% 10.5% 7.0%
Improve 42.1% 41.9% 43.0%
Worsen 15.4% 13.4% 22.2%
Mixed change 12.9% 9.5% 25.2%
Weighted data a
No problems 23.5% 28.5% 2.3%
No change 9.2% 10.3% 4.6%
Improve 38.4% 37.3% 43.2%
Worsen 12.8% 10.3% 23.3%
Mixed change 16.1% 13.6% 26.6%

PCS: Post-concussion syndrome (≥3 of the core post-concussion symptoms). a Data are corrected for stratification, and are representative of an adult population of injured patients who visited an emergency department in The Netherlands.