Table 2.

Proportion of participants with PPCS

PPCS	Proportion of participants
Headachea	0.53
Fatiguea	0.53
Irritable	0.5
Difficulty concentrating	0.5
Feeling mentally ‘foggy’a	0.47
Dizziness	0.44
Drowsinessa	0.4
Sensitivity to lighta	0.4
Sensitivity to noiseb	0.36
Nauseaa	0.34
Answer questions more slowly than usualb	0.29
Difficulty rememberinga	0.27
Nervousnessa	0.27
Vision problems (double vision, blurring)a	0.27
Sadnessa	0.2
Balance problemsa	0.2
Feeling slowed downa	0.13

^aMissing data from one participant are not included.

^bMissing data from two participants are not included.