Table 3.

Effectiveness of the group educational intervention in reducing the duration of the headache (in days) by ≥50%

3.1 Univariate analysis
	≥50% reducing the headache duration	<50% reducing the headache duration	Sig.b
Intervention group	71.9%	28.1%	= 0.000
Control group	22.4%	77.6%

^aOdds ratio.

^bStatistical significance.