Body Mass Index and Primary Headache: A Hospital-Based Study in China

Table 6

Multiple logistic regression analysis of the TTH group.

Variable	p value	OR	95% CI for OR
Medication overuse	<0.001	0.044	0.01–0.203
Average headache days per month	<0.001	1.233	1.19–1.28
Duration of headache history	0.053	1.036	1.0–1.07
BMI classification	0.361
Compared with normal weight)
Underweight	0.403	1.679	0.5–5.66
Overweight	0.154	0.54	0.23–1.26
Obese	0.736	1.46	0.16–13.45

TTH: tension-type headache; OR: odds ratio; CI: confidence interval; BMI: body mass index.