It's not a double-blind study designed to test a hypothesis; it's post-vaccination surveillance. The subjects were asked about symptoms over a nine month perio

It's not a double-blind study designed to test a hypothesis; it's post-vaccination surveillance. The subjects were asked about symptoms over a nine month period. The incidence of unexpected bleeding in the 4 weeks post-vaccination was 2X-3X higher than at other times in post-menopausal women, and 3X-5X higher for pre- or peri-menopausal women at times when they were not having a menstrual period. Spikevax was associated with 32% increased incidence compared to Comirnaty.