. 2015 Jul 23;182(4):366–374. doi: 10.1093/aje/kwv051

Table 2.

Mixed Membership Trajectory Model With 4 Time-Invariant Predictors, Showing Posterior Means and Standard Deviations for the Parameters of the 3 Canonical Survival Trajectories, Cardiovascular Health Study Cognition Study, 1992–2014

Meaning	Weibull Parameter	k = 1,^a mean (SD)	k = 2,^b mean (SD)	k =3,^c mean (SD)
Scale	θ_k	3.887 (0.376)	5.397 (0.616)	4.050 (0.256)
Shape	δ_k	29.059 (0.951)	29.610 (0.799)	25.217 (0.499)

Abbreviation: SD, standard deviation.

^a Healthy profile.

^b Intermediate profile.

^c Unhealthy profile.