Figure 2
From: Sleep features and central sensitization symptoms in primary headache patients
Top: Mean values and standard errors of allodynia scores in primary headache groups. The symbols *, ° and + indicate the results of Bonferroni test: * chronic migraine compared to migraine with and without aura, other TACs, migraine without aura plus episodic tension type headache, chronic and episodic tension type headache: * p < 0.05; ° other primary headaches compared to all the remaining groups: p < 0.05; + episodic tension type headache vs migraine without aura: p < 0.05. Bottom: Mean values and standard errors of pericranial tenderness scores in primary headache groups. The symbol * indicates the results of Bonferroni test: * chronic migraine compared to other primary headache groups, excluding chronic tension type headache: p < 0.05.