Diekema.ppt [Compatibility Mode] - Institute of Medicine

Updated VSD Analysis, August, 2011
• New method for estimating attributable risk
• Uses information on baseline risk for seizures by
age in months from the entire VSD population
(provides more stable estimates), rather than
estimating baseline risk from the control period
for broad age intervals (where there are fewer
cases and more uncertainty about baseline risk
estimates despite the broad age interval).
• Highlights substantial variation in AR by age in
months, which is due to the variability in baseline
risk by age in months.