56 lines
1.8 KiB
R
56 lines
1.8 KiB
R
setwd("C:/Users/irina/Documents/DND/EOHI/eohi2")
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options(scipen = 999)
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df <- read.csv("eohi2.csv")
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library(psych)
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library(knitr)
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# Select the 4 variables for reliability analysis
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reliability_data <- df[complete.cases(df[, c("ehiDGEN_5_mean", "ehiDGEN_10_mean", "ehi5_global_mean", "ehi10_global_mean")]),
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c("ehiDGEN_5_mean", "ehiDGEN_10_mean", "ehi5_global_mean", "ehi10_global_mean")]
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# Cronbach's Alpha
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alpha_result <- alpha(reliability_data)
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# Split-half reliability
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split_half <- splitHalf(reliability_data)
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# Alpha if item dropped
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alpha_dropped <- alpha(reliability_data, check.keys = TRUE)
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# Inter-item correlations
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cor_matrix <- cor(reliability_data, use = "complete.obs")
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# Create a summary table
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summary_table <- data.frame(
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Variable = names(reliability_data),
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n = nrow(reliability_data),
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Mean = round(colMeans(reliability_data, na.rm = TRUE), 5),
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SD = round(apply(reliability_data, 2, sd, na.rm = TRUE), 5),
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Min = round(apply(reliability_data, 2, min, na.rm = TRUE), 5),
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Max = round(apply(reliability_data, 2, max, na.rm = TRUE), 5),
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Median = round(apply(reliability_data, 2, median, na.rm = TRUE), 5)
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)
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html_output <- paste0(
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"<html><head><title>EHI Reliability Analysis</title></head><body>",
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"<h1>EHI Reliability Analysis</h1>",
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"<h2>Cronbach's Alpha</h2>",
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kable(alpha_result$total, format = "html"),
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"<h2>Split-Half Reliability</h2>",
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"<p>Maximum split half reliability: ", round(split_half$maxrb, 5), "</p>",
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"<h2>Item-Level Statistics</h2>",
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kable(alpha_result$item.stats, format = "html"),
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"<h3>Alpha if Item Dropped</h3>",
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kable(alpha_dropped$alpha.drop, format = "html"),
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"</body></html>"
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)
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writeLines(html_output, "EHI reliability.html") |