The nma_summary class

The nma_summary class contains posterior summary statistics of model parameters or other quantities of interest, and the draws used to obtain these statistics.

Details

Objects of class nma_summary have the following components:

summary

A data frame containing the computed summary statistics. Column .trt indicates the corresponding treatment, or columns .trta and .trtb indicate the corresponding contrast (.trtb vs. .trta). If a regression model was fitted with effect modifier interactions with treatment, these summaries will be study-specific. In this case, the corresponding study population is indicated in the .study column. If a multinomial model was fitted, the .category column indicates the corresponding category.

sims

A 3D array [Iteration, Chain, Parameter] of MCMC simulations

studies

(Optional) A data frame containing study information, printed along with the corresponding summary statistics if summary contains a .study column. Should have a matching .study column.

The following attributes may also be set:

xlab

Label for x axis in plots, usually either "Treatment" or "Contrast".

ylab

Label for y axis in plots, usually used for the scale e.g. "log Odds Ratio".

The subclass nma_rank_probs is used by the function posterior_rank_probs(), and contains posterior rank probabilities. This subclass does not have a sims component, as the rank probabilities are themselves posterior summaries of the ranks (i.e. they do not have a posterior distribution). The posterior ranks from which the rank probabilities are calculated may be obtained from posterior_ranks().