Is the sequence ratio an unbiased estimate of the incidence rate ratio? A simulation study.
Thomas DelvinSofie D EgsgaardNina Sahlertz KristiansenHelene KildegaardLars Christian LundMartin Torp RahbekPublished in: Pharmacoepidemiology and drug safety (2024)
The SR is a biased estimate of the incidence rate ratio, when the true IRR is high, the outcome has a high mortality, or when the outcome reduces the probability of future exposure.