This data was simulated to be monotonically decreasing. There are 500 individuals, with a random number of data points. Each individual has a two-level random effect (intercept and slope), a common intercept, and a random error term. The ages range from 0 to 10 years, which is given in months.
This data was simulated to imitate height growth of female children in electronic medical records. There are 500 individuals, with a random number of data points. Based on the CDC growth curve, each individual has a two-level random effect (intercept and slope), a common intercept, and a random error term. The ages range from 0 to 10 years, which is given in months.