Fig. 4: Comparison of effect estimates between the DID-IV and regression discontinuity approach.
From: A natural experiment on the effect of herpes zoster vaccination on dementia
Comparison of absolute effect estimates of having received the zoster vaccine on new diagnoses of dementia, shingles and postherpetic neuralgia between the DID-IV and the regression discontinuity analyses. The data source for this analysis was the SAIL database for Wales. The sample size for the dementia outcome is 96,767 adults and the sample for the shingles and postherpetic neuralgia outcomes is 105,258 adults. P values were calculated using two-sided t-tests. The P value for the DID-IV effect on shingles is 0.001. The error bars depict the 95% CIs around the point estimate of the regression coefficient (two-sided t-tests).
