*Educational level: Low: highest educated person in the household had 0–5 years of schooling; High: highest educated person had more than 5 years of schooling.‡Crowding: for this study defined as more
Interval-censored failure time data arise in a number of fields and many authors have discussed various issues related to their analysis. However, most of the existing methods are for univariate data
This is the famous Galton data on the heights or parents and their children (i.e., where the term "regression" comes from). The data are public domain and can be used for teaching or any other purpose
