print_irt_stan function

View a table of selected parameter posteriors after using irt_stan

This function prints a table summarizing the parameters for a fitted edstan model.

print_irt_stan(fit, data_list = NULL, ...)

Arguments

• fit: A stanfit-class object created by irt_stan.
• data_list: An optional Stan data list created with irt_data. If provided, the printed posterior summaries for selected parameters are grouped by item. Otherwise, ungrouped results are provided, which may be preferred, for example, for the Rasch or rating scale models.
• ...: Additional options passed to print.

Examples

# Make a suitable data list:
spelling_list <- irt_data(response_matrix = spelling[, 2:5],
                          covariates = spelling[, "male", drop = FALSE],
                          formula = ~ 1 + male)

## Not run:

# Fit a latent regression  2PL
twopl_fit <- irt_stan(spelling_list, model = "2pl_latent_reg.stan",
                      iter = 300, chains = 4)

# Get a table summarizing parameter posteriors
print_irt_stan(twopl_fit, spelling_list)
## End(Not run)