S1 Data - A mixed-effects two-part model for twin-data and an application on identifying important factors associated with extremely preterm children’s health disorders
Stata replication files for the online appendix. Twins data & codebook downloaded years ago from the University of Nebraska & converted to Stata. https://www.unl.edu/polphyslab/data Open MX replicatio
Two different models, Model (1) and Model (2), for twin analysis according to Carlin et al. [20] (5108 individuals in complete same-sex twin pairs). 1p<0.05 indicates improved model fit for the model
