Adds sampling variances for common-metric effect sizes (r) to the FReD dataset, using metafor::escalc
Usage
add_sampling_variances(
fred_data,
es_value_columns = c("es_o", "es_r"),
N_columns = c("n_o", "n_r"),
vi_columns = c("vi_o", "vi_r")
)
Arguments
- fred_data
FReD dataset
- es_value_columns
Character vector of column names with correlation values
- N_columns
Character vector of column names with sample sizes
- vi_columns
Character vector of target columns for sampling variances
Value
FReD dataset with additional columns for sampling variances (metafor's vi)
