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Table 2 Time points of study recruitment of the four cohorts and number of follow-up surveys (T1: Baseline; T2-T4: Follow-up surveys; ‘X’: participation; ‘-’: no participation)

From: Sensor-based systems for early detection of dementia (SENDA): a study protocol for a prospective cohort sequential study

CohortsT1T2T3T4
Cohort 1 (begin: February 2018)XXXX
Cohort 2 (begin: July 2018)XXX-
Cohort 3 (begin: January 2019)XX--
Cohort 4 (begin: January 2020)X---