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. 2019 Nov 6;40:100734. doi: 10.1016/j.dcn.2019.100734

Table 1.

Demographics per data collection wave.

N Sex Females/Males Age Mean (SD) Age Min-max Retained from previous waves Newly recruited
Wave 1 101 53/48 15.8 (2.35) 12.0-19.7 101
Wave 2 121 61/60 16.7 (2.88) 11.9-21.9 61 60
Wave 3 106 58/48 20.1 (3.27) 13.8-26.1 106 0
Total 169 92/77 17.7 (3.43) 11.9-26.1

Note: New participants were recruited at wave 1 and wave 2. Colum “Retained from previous waves” refers to individuals who participated at a time point 2 (or 3) and also have data from wave 1 and/or 2.