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. Author manuscript; available in PMC: 2019 Jun 1.
Published in final edited form as: Neurobiol Aging. 2018 Feb 10;66:180.e11–180.e21. doi: 10.1016/j.neurobiolaging.2018.02.005

Fig. 2.

Fig. 2

Full tandem stance time by COMT rs4680 genotype and age (n = 4,038). Error bars represent standard error. Balance time is shown as the percentage of total prescribed time (i.e., 30 or 60 seconds) that participants were able to maintain the full tandem stance. Higher scores (i.e., longer balance time) are desired. Met/Met individuals performed best in the middle (75–84 years) and oldest (85+ years) age groups. The Met/Met genotype is associated with high DA availability, so this result supports our hypothesis.