Fig. 1.

Flowchart showing the process of determining the final analysis participants.

The baseline data consisted of 995 participants, then we excluded those who did not meet the criteria. (n=755, 75.9%). Participants were enrolled in two groups according to OU: the SDA group with 0-6 OU and the CDA group with 12 OU. The SDA group (n=21) represented 3.9% of the total number of participants (8 males and 13 females with a mean age of 71.3 ± 4.0 years, mean ± S.D.), and no participants dropped out. In the CDA group, nine of the 266 participants (94 males, 172 females) who participated in the baseline did not take part in the re-assessment. Finally, the CDA group included 257 participants (88 males and 169 females, mean age: 71.6 ± 5.4 years, mean ± S.D.).