Before revision:  We derived features from the phone and wearable device for length of time spent at home,  distance travelled from home,  heart rate, sleep , and patterns of phone use. We visualised data using time series plots and performed statistical tests to assess differences in behaviour during baseline, pre-, and post-lockdown periods.
After revision:  We derived features from the phone and wearable device for length of time spent at home, distance travelled from home, heart rate, sleep duration, bedtime, phone unlock duration, and social app use duration. We performed Kruskal-Wallis tests followed by post-hoc Dunns tests to assess differences in behaviour during baseline, pre-, and post-lockdown periods.