Yeah if there is only the 6 blood clots out of 4,000,000 doses. The probability is 1.50*10^-6, with a standard error of +or- 1.20*10^-6. So probably not linked because the the rate of blood clots is about 1 in 1000 per year. They women that this happened to could have another linkage factor that caused this besides the vaccine but we will find out sooner or later. Thank you Biostats class
If I correct for women who got the vaccine and assume it was half of the doses the numbers are p= 3.0*10^-6 and SE of 1.22*10^-6.