Table 7.

Pearson R correlations between migraine characteristics and comorbid disorders

	Negative life event score	Length of time since first migraine symptoms	Migraine symptoms per month (n)
Depression	0.362**	0.241**	0.253**
Anxiety	0.325**	0.183**	0.230**
Stroke	0.037*	0.036	0.034
Epilepsy	0.040*	0.007	0.047*
Hypertension	0.067**	0.113**	0.101**
Diabetes	0.034	0.054**	0.052**
Bipolar	0.077**	0.055**	0.042*
IBS	0.182**	0.156**	0.167**
Chronic pain	0.346**	0.186**	0.326**
Fibromyalgia	0.189**	0.121**	0.171**
Thyroid disease	0.117**	0.110**	0.123**
Chronic fatigue	0.267**	0.146**	0.253**
Asthma	0.132**	0.096**	0.135**
COPD	−0.002	0.049**	0.050**
Autoimmune disorder	0.087**	0.062**	0.067**
Negative life event score	1	0.299**	0.519**
Length of time since first migraine symptoms	0.299**	1	0.406**
Migraine symptoms per month (n)	0.519**	0.406**	1

Notes:

^**Correlation is significant at the 0.01 level (two-tailed);

^*correlation is significant at the 0.05 level (two-tailed).

Abbreviations: COPD, chronic obstructive pulmonary disease; IBS, irritable bowel syndrome.