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Interrupted time-series (ITS) design, from July 1, 2019, to September 30, 2020, evaluating the healthcare services change in the PD and control cohorts. The pre-intervention period was from July 1, 2019, to March 8, 2020; the intervention (index week change) was set in the week of March 9 to 15, 2020; the post-intervention period was from March 16, 2020, to September 30, 2020. (A) Any outpatient visit change is reported. (B) Any non-urgent hospital admission change is reported.
