Risk factors for development of personal protective equipment induced headache: e-survey of medical staff in Baltic states

Table 2 The differences of headache characteristics between predisposed individuals with previous headache history and respondents who developed de novo headache while using personal protective equipment (PPE)

Headache characteristics	De novo headache (n = 507)		Predisposed headache (n = 608)		p value*
Headache characteristics	n	%	n	%
Start time:					< 0.001
within 3 h	342	67.45	345	56.74
In 4–5 h	115	22.68	153	25.16
in ≥ 6 h	50	9.86	110	18.09
Headache stops after taking off PPE					0.001
Immediately	79	15.58	54	8.88
in 1 h	204	40.24	219	36.02
in 2–3 h	146	28.8	206	33.88
In 4–5 h	44	8.68	79	12.99
In ≥ 6 h	34	6.71	50	8.22
Frequency					< 0.001
Almost every day	66	13.02	48	7.89
4–5 days per week	49	9.66	40	6.58
2–3 days per week	201	39.64	178	29.28
1 day per week	102	20.12	170	27.96
Less than 1 day per week	89	17.56	172	28.29
Severity	4.73 (1.75)^a		5.29 (1.79)^a		< 0.001
Localization
Orbital region	145	28.60	234	38.49	0.001
Occipital region	165	32.54	234	38.49	0.039
Temporal region	354	69.82	419	68.91	0.743
Frontal region	274	54.04	351	57.73	0.217
Nose	204	40.24	174	28.62	< 0.001
Cheeks	169	33.33	147	24.18	0.001
Accompanying symptoms
Nausea	98	19.33	156	25.66	0.012
Vomiting	5	0.99	14	2.30	0.091
Photophobia	97	19.13	156	25.66	0.010
Phonophobia	80	15.78	143	23.52	0.001
Osmophobia	27	5.33	73	12.01	< 0.001
Visual impairment	113	22.29	105	17.27	0.035
Need for rest	324	63.91	404	66.45	0.375
Use of acute pain medication	218	43.00	375	61.68	< 0.001

ISSN: 1472-6963