pred_adjusted: Adjusted Predictions Based on Group Comparisons

In PredTest: Preparing Data For, and Calculating the Prediction Test

Adjusted Predictions Based on Group Comparisons

Description

This function calculates adjusted predictions for variables of interest, taking into account covariates and group comparisons. It then returns whether the results align with the hypothesized direction of effects.

Usage

pred_adjusted(dataset, hypothesis, vars, covariates, group, ref)

Arguments

dataset	A data frame containing the data to be analyzed.
hypothesis	A string or vector of strings containing either 'increase' or 'decrease', indicating the expected direction of the effect.
vars	A vector of variable names in the dataset that are the outcomes of interest. These must be numeric columns.
covariates	A vector of covariates to include in the model. These must be numeric columns in the dataset.
group	The name of the grouping variable in the dataset. This must be a column in the dataset and should not overlap with vars or covariates.
ref	The reference category within the group variable. This must be a value present in the group column.

Value

A list with two elements:

results

A vector indicating whether each hypothesis was correct (1 for correct, 0 for incorrect).

weights

A vector of weights corresponding to each variable in vars, calculated from the correlation matrix.

Examples

data("group_cog_data")
data("adjusted_example")

# simple example
pred_adjusted(adjusted_example, c("decrease", "increase"),
c('v1', 'v2'), 'sex', "group", 0)

# simulated example
pred_adjusted(dataset = group_cog_data, hypothesis = "decrease",
vars = c('craft_verbatim', 'fluency_f_words_correct'),
covariates = c('number_span_forward', 'number_span_backward'),
group = "group.factor", ref = "Control")

PredTest documentation built on Sept. 16, 2024, 5:06 p.m.