Table 4.

Factors involved in overall pain assessed by multivariate regression analysis

	β	CI 95%	P
Intervention	-6.3	-9.7-2.8	<0.001
Age	0.2	-0.01-0.45	0.057
BMI	0.6	0.23-1.01	0.002
Headache	6.85	3.2-10.5	<0.001