Table 3.

Correlations between CUDQ in caffeine consumers and their demographics and clinical characteristics.

Characteristic	CUDQ
	(r) Coef.	P-value
Age	−0.012	0.809
BMI	−0.006	0.909
Duration of primary headache disorder	−0.108	0.032*
MHD	0.192	<0.001*
AMD	0.233	<0.001*
HIT-6 total score	0.201	<0.001*
DASS-12 total score	0.467	<0.001*
SURPS total score	0.438	<0.001*

AMD, acute medication days; BMI, body mass index; CUDQ, Caffeine Use Disorder Questionnaire; DASS-12, Depression Anxiety Stress Scales–12; HIT-6, Headache Impact Test-6; MHD, monthly headache days; SURPS, Substance Use Risk Profile Scale.

(r) Coef., Spearman correlation coefficient.

The p-values were adjusted for multiple testing using Benjamini and Hochberg procedure.

*p-value ≤ 0.032 is considered significant.