2017-11-20 Second meeting

[andkov]

Some points for discussion:

(1). Convention for model and submodels nomenclature

(2). Does everyone have physical activity?

(3). Do we separate analyses by gender?

(4). What are the specific instruction for age*gender specific cutoffs for gait?

(5). What should be the method for converting time-variant measures to time-invariant?

• baseline? (the first non-missing observation)
• median (across observable lifespan)
• something else (personal slope? difference score?)

[andkov]

Minutes

• Q. What do we really want to understand with longitudinal measures?

• A. Do we get the consistent picture from different approaches?

• If we look at the association using different statistical models, we can whether they paint a consistent picture (see @andkov dissertation for example of models (MLM, GMM, Markov )

• We do not separate analyses by gender, but create height*age specific categorical gait variable.

• some studies may not have sufficient subject that have a slow gait at baseline

• we need to better understand the temporal structure for grip and gait in order to make decisions regarding

• what journal do we have in mind? - Emiel: Dementia - Graciela: Gerontology

Actions items

• @GracielaMuniz and @annierobi will propose several potential dates to meet in Montreal in February 2018.
• Every participant will send it the Information regarding gait and grip measures:
  • What is the specific procedure of measurement?
  • What is number of people under a given threshold? (e.g. gait = .06). Please consult Looking forward to the second meeting #3
  • If continuous, please provide descriptives (means, sd)

Next meeting

is scheduled for Monday, 2017-12-11 at 8 am pacific.