Table 4. Characteristics of HARE compared to other causes of headache.

HARE: headache associated with refractive errors

Characteristic	HARE (n = 198)	Other causes (n = 113)	p-Value
Male	148 (74.7%)	62 (54.9%)	0.0003
Adolescent	88 (44.4%)	73 (64.6%)	0.0006
Duration <1 month	20 (10.1%)	21 (18.6%)	0.0334
Frontal location	63 (31.8%)	23 (20.4%)	0.0297
Screen time >2 hours/day	151 (76.3%)	64 (56.6%)	0.0003
Family history of headache	28 (14.1%)	25 (22.1%)	0.07
Myopia	149 (75.3%)	1 (0.1%)	<0.00001
Hypermetropia	29 (14.6%)	21 (18.6%)	0.36
Astigmatism	20 (10.1%)	10 (8.8%)	0.72