Arthritis Dataset – Description
This dataset contains longitudinal data on 906 observations from patients with arthritis. Each record includes patient demographic details, treatment groups, and health outcome measurements across different time points. The main objective of this dataset appears to be tracking changes in arthritis severity over time in response to treatment.

Key Features:

id: Unique patient identifier

y: Health score or arthritis severity score

sex: Gender of the patient (likely encoded numerically)

age: Age of the patient at baseline

trt: Treatment group assignment

baseline: Baseline severity score

time: Follow-up time in months or visits