Bayes Theorem Bayes theorem Bayesian networks Bayesian variable selection Cohort Studies Cox proportional hazard model Cox proportional hazards model Forecasting Gaussian graphical model Gaussian graphical models Gene Expression Gene expression Graphic methods Heterogeneous cohort Heterogeneous cohorts Humans Markov processes Markov random field prior Markov random field priors Molecular measurements Power Sample Size Sample sizes Subgroup analyse Subgroup analysis Variables selections cohort analysis gene expression human sample size