The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

Table 4 Correlation between sleep quality scale and the studied parameters

From: Assessment of serum level of melatonin in migraine: a case control study

	SQS
	r	p
Age	− 0.063	0.604
Gender	− 0.091	0.454
Smoking	− 0.082	0.501
Education	0.072	0.555
BMI	− 0.076	0.534
Age of onset	0.197	0.101
Frequency of attack	0.581	0.028*
Duration of attack	− 0.233	0.053
Melatonin first	− 0.613	< 0.001**
Melatonin second	− 0.462	< 0.001**
Migraine disability	0.533	< 0.001**

r Spearman rank correlation coefficient. *p < 0.05 is statistically significant **p ≤ 0.001 is statistically highly significant BMI body mass index, SQS sleep quality scale

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