Fig. 1.

Sample data reduction process for physical activity data (steps) included in the analysis. We began data processing by exploring (a) the representation of the availability of daily step data for the sample of 675 participants with activity data; then we (b) reduced the sample of participants to include only those with daily step data for the 84-day period before and after the procedure and (c) further reduced the sample to include only those participants who met the “dense data” requirements of at most 7 consecutive days of missing data within 84 days of the procedure date.