Skip to contents

Prepare data and fit models

prepare_markov_data()
Prepare Markov Data for Proportional Odds Modeling
orm_markov()
Fit an rms Markov Model
vglm_markov()
Fit a VGAM Markov Model
blrm_markov()
Fit an rmsb Markov Model

Estimate probabilities, time in states, and treatment contrasts

sops()
Calculate Individual State Occupation Probabilities
avg_sops()
Calculate Averaged State Occupation Probabilities (Marginal Effects)
avg_time()
Calculate Average Total Time in States
avg_comparisons()
Average Comparisons From Markov State Occupancy Probabilities
inferences()
Inference for State Occupation Probabilities and Time Summaries
time_in_state()
Compute Total Time in Target State(s)
interpolate_sops()
Interpolate SOPs from Visit Time to Real Time
vcov(<markov_sops>) vcov(<markov_avg_sops>) vcov(<markov_avg_comparisons>) vcov(<markov_avg_time>)
Analytical Covariance for SOPs, Average Times, and Comparisons
mostr.delta_max_bytes
Analytical Delta-Method Memory Limit
soprob_markov()
Calculate State Occupancy Probabilities

Plot results and diagnose models

plot_sops()
Plot State Occupancy Probabilities Over Time
plot_comparisons()
Plot Average Comparisons
plot_time()
Plot Average Time in States
plot_transitions()
Plot Empirical or Model-Based Transition Proportions
plot_correlation()
Plot Empirical or Model-Implied Correlations Over Time
plot_variogram()
Plot an Empirical or Model-Implied Correlation Variogram
plot_lp_difference()
Plot Treatment Differences in the Linear Predictor
compare_se_orm_vglm()
Compare Standard Errors from orm and vglm

Simulate trajectories

sim_markov()
Simulate ordinal patient trajectories from a Markov model
actt1_preset
ACTT-1 preset for sim_markov()
actt2_preset
ACTT-2 preset for sim_markov()
violet_preset
VIOLET preset for sim_markov()
violet_baseline
Starting states, ages, and SOFA scores of the VIOLET patients

Bootstrap and coefficient utilities

bootstrap_model_coefs()
Bootstrap confidence intervals for model coefficients
get_draws()
Extract Individual Draws from Inference Objects
get_effective_coefs()
Calculate Effective Coefficients for Fast Prediction
get_vcov_robust()
Get Robust Variance-Covariance Matrix
set_coef()
Set Coefficients for Model Objects
robcov_vglm()
Robust (Sandwich) Covariance Matrix Estimation for vglm Objects
coef(<robcov_vglm>)
Extract Coefficients from robcov_vglm Objects
vcov(<robcov_vglm>)
Extract Variance-Covariance Matrix from robcov_vglm Objects
print(<robcov_vglm>)
Print Method for robcov_vglm Objects
summary(<robcov_vglm>)
Summary Method for robcov_vglm Objects