Table 3.

Comparison of PCSI symptom presence by age group.

Symptoms	5–9 Years		10–12 Years		13–18 Years		p-Values
	n	%	n	%	n	%
Headaches	120	78.4	447	82.5	2115	86.0	0.007 c
Nausea	63	41.2	219	40.5	1049	42.7	0.627
Light	67	55.4	348	64.3	1800	73.3	<0.001 b,c
Noise	66	54.5	289	53.4	1472	59.9	0.014 b
Dizziness	59	38.6	299	55.2	1506	61.2	<0.001 a,b,c
Balance	35	28.9	214	39.6	1243	50.5	<0.001 b,c
Vision	31	25.6	165	30.5	1014	41.3	<0.001 b,c
Difficulty in concentrating	80	52.3	324	59.9	1813	73.8	<0.001 b,c
Difficulty in remembering	42	34.7	218	40.3	1292	52.6	<0.001 b,c
Slowed down	62	51.2	330	61.0	1512	61.5	0.076
Mentally foggy	48	39.7	282	52.1	1607	65.4	<0.001 b,c
Drowsiness	64	52.9	346	64.0	1533	62.3	0.075
Fatigue	68	56.2	351	64.9	1710	69.5	0.002 c
Irritability	74	48.4	272	50.3	1352	55.0	0.050
Sadness	38	31.4	145	26.8	795	32.4	0.042 b
Nervousness	42	34.7	196	36.2	802	32.6	0.263

Note: ^a denotes a significant difference was detected between 5–9- and 10–12-year-olds; ^b denotes a significant difference was detected between 10–12- and 13–18-year-olds; and ^c denotes a significant difference was detected between 5–9- and 13–18-year-olds.