Table 2

Main evaluation of clinical outcomes before and after PFO closure

Clinical outcomes0M3M6M12M
Frequency (per month)11.53±11.063.92±7.473.23±6.972.84±6.81
Duration (hours)12.43±15.254.64±11.044.34±10.884.00±10.40
VAS score4.57±2.171.66±1.601.55±1.511.44±1.45
HIT-6 score61.18±7.9743.65±9.1743.06±8.9542.70±8.76
  • HIT-6, Headache Impact Test; 0M, preoperatively; 3M, at 3 months postoperatively; 6M, at 6 months postoperatively; 12M, at 12 months postoperatively; PFO, patent foramen ovale; VAS, Visual Analogue Scale.