mverse is an extension to multiverse package (Sarma et al. 2021) which allows users create explorable multiverse analysis (Steegen et al. 2016) in R. This extension provides an additional level of abstraction to the ‘multiverse’ package with the aim of creating user friendly syntax to researchers, educators, and students in statistics. The ‘mverse’ syntax is designed to allow piping and takes hints from the ’tidyverse’ grammar. The package allows users to define and inspect multiverse analysis using familiar syntax in R.

Opioid addiction and overdose is an ongoing crisis in the United States and Canada. While many researchers have attempted to explain the epidemic and its impacts, the existing researches have paid little attention to the interim transitions that lead to opioid abuse, overdose, and death. This project proposes a theoretical approach to understanding the transitions providing probabilistic estimates for the transitions rates in a multi-state modelling framework. The project aims to provide insight on how the crisis is affecting different demographic groups at different stages of opioid usage.

The project aims to construct multistate life tables by parental bereavements. We use a survey data to estimate the risk of losing each parent in isolation as well as in order in the United States. We feed the data to a classic demographic model to construct multistate life tables. By constructing the tables for different ethicity/race groups, we hope to investigate racial disparities in life expectancies with each parent.