Objective evaluation of postoperative changes in real-life activity levels in the postoperative course of lumbar spinal surgery using wearable trackers

Table 2 Percentage change was calculated by dividing the mean active count for each period by the mean active count at baseline. The value from the analysis was calculated using repeated measurement for percentage change. SD, standard deviation; SE, standard error

	n	Mean active count, SD	Percentage change from baseline, SD	Repeated measurement, SE
Baseline	60	3474 ± 1698	100	100
1 month	43	3279 ± 1673	90.9 ± 31.8	92.3 ± 5.6
3 months	47	3547 ± 1700	104.2 ± 42.2	108.2 ± 7.2
6 months	46	3777 ± 2017	111.6 ± 49.7	120.5 ± 9.4
12 months	44	3912 ± 1879	125.6 ± 104.4	127.9 ± 13.2

ISSN: 1471-2474