80 lines
2.2 KiB
R
80 lines
2.2 KiB
R
setwd("C:/Users/irina/Documents/DND/EOHI/eohi2")
|
|
|
|
options(scipen = 999)
|
|
|
|
df <- read.csv("eohi2.csv")
|
|
library(psych)
|
|
library(dplyr)
|
|
library(knitr)
|
|
library(irr)
|
|
|
|
# Select the 4 variables for reliability analysis
|
|
reliability_vars <- df[, c("ehiDGEN_5_mean", "ehiDGEN_10_mean", "ehi5_global_mean", "ehi10_global_mean")]
|
|
|
|
# Check for missing values
|
|
print(colSums(is.na(reliability_vars)))
|
|
|
|
# Remove rows with any missing values for reliability analysis
|
|
reliability_data <- reliability_vars[complete.cases(reliability_vars), ]
|
|
|
|
print(nrow(reliability_data))
|
|
|
|
# Cronbach's Alpha
|
|
alpha_result <- alpha(reliability_data)
|
|
print(alpha_result)
|
|
|
|
# Split-half reliability
|
|
split_half <- splitHalf(reliability_data)
|
|
print(split_half)
|
|
|
|
# Alpha if item dropped
|
|
alpha_dropped <- alpha(reliability_data, check.keys = TRUE)
|
|
print(alpha_dropped$alpha.drop)
|
|
|
|
# Inter-item correlations
|
|
cor_matrix <- cor(reliability_data, use = "complete.obs")
|
|
print(round(cor_matrix, 5))
|
|
|
|
# Descriptive statistics
|
|
desc_stats <- describe(reliability_data)
|
|
print(desc_stats)
|
|
|
|
# Create a summary table
|
|
summary_table <- data.frame(
|
|
Variable = names(reliability_data),
|
|
Mean = round(colMeans(reliability_data, na.rm = TRUE), 5),
|
|
SD = round(apply(reliability_data, 2, sd, na.rm = TRUE), 5),
|
|
Min = round(apply(reliability_data, 2, min, na.rm = TRUE), 5),
|
|
Max = round(apply(reliability_data, 2, max, na.rm = TRUE), 5),
|
|
Skewness = round(apply(reliability_data, 2, skew, na.rm = TRUE), 5),
|
|
Kurtosis = round(apply(reliability_data, 2, kurtosi, na.rm = TRUE), 5)
|
|
)
|
|
|
|
print(summary_table)
|
|
|
|
# Save results
|
|
write.csv(summary_table, "reliability_summary_ehi.csv", row.names = FALSE)
|
|
|
|
# Create HTML output using sink()
|
|
sink("temp_output.txt")
|
|
print(alpha_result)
|
|
print(split_half)
|
|
print(alpha_dropped$alpha.drop)
|
|
print(round(cor_matrix, 5))
|
|
print(desc_stats)
|
|
print(summary_table)
|
|
sink()
|
|
|
|
# Read the captured output
|
|
captured_output <- readLines("temp_output.txt")
|
|
file.remove("temp_output.txt")
|
|
|
|
html_output <- sprintf(
|
|
"<html><head><title>EHI Reliability Analysis</title></head><body>
|
|
<h1>EHI Reliability Analysis</h1>
|
|
<pre>%s</pre>
|
|
</body></html>",
|
|
paste(captured_output, collapse = "\n")
|
|
)
|
|
|
|
writeLines(html_output, "EHI reliability.html") |