The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

Table 3 Correlation between melatonin level and the studied parameters

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

	Melatonin first sample		Melatonin second sample
	r	p	r	p
Age	0.129	0.289	− 0.018	0.884
Gender	− 0.032^¥	0.792	− 0.107^¥	0.38
Education	0.091^¥	0.455	0.16^¥	0.185
Smoking	− 0.022^¥	0.857	− 0.028^¥	0.816
BMI	− 0.083	0.496	0.083	0.492
Age of onset	0.041^¥	0.736	0.058^¥	0.633
Frequency of attack	− 0.963^¥	< 0.001**	− 0.812^¥	< 0.001**
Duration of attack	0.135^¥	0.266	0.034^¥	0.778
Migraine severity	− 0.842^¥	< 0.001**	− 0.712^¥	< 0.001**

r Pearson correlation coefficient ^¥Spearman rank correlation coefficient, **p ≤ 0.001 is statistically highly significant, BMI body mass index

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