Table 2

Clinical features of headache not associated with mobile phone use (HNAMP).

HAMP participants

N (%)

Non-HAMP participants

N (%)

p value


Headache not associated with mobile phone use, lasing ≥ 30 min.

23 (57.5)*

112 (65.1)*

NS

Moderate or severe intensity

13 (35.1)

51 (33.1)

NS

Unilateral pain

19 (51.4)

68 (44.2)

NS

Pulsating quality

14 (37.8)

52 (33.8)

NS

Aggravation of headache by routine activity

9 (24.3)

24 (15.64)

NS

Nausea

4 (10.8)

12 (7.8)

NS

Photophobia

6 (16.2)

24 (15.6)

NS

Phonophobia

28 (75.7)

72 (46.8)

0.002

ID-migraine (%)

4 (10.8)

13 (8.4)

NS


NS: not significant. *From all participants at initial questionnaire survey (40 participants with HAMP and 172 participants without HAMP). From participants with headache not associated with mobile phone use (37 HAMP participants and 154 Non-HAMP participants).

Chu et al. BMC Neurology 2011 11:115   doi:10.1186/1471-2377-11-115

Open Data