srir
The Severe Respiratory Insufficiency Questionnaire (SRI) is a multidimensional general health questionnaire "to assess HRQL in patients with chronic respiratory failure due to various underlying diseases" (Windisch et al. 2003). Based on 49 items, seven sub scales and one total summary scale are calculated:
All scales have a score range between 0 and 100 with higher scores indicating a high burden of symptoms (Struik et al. 2013). All items are scored on a 5-point Likert scale ranging from 1 (completely untrue) to 5 (always true). The majority of items need to be recoded (recoded value = 6 – raw value).
With score_sri
the package contains a function for scoring the Severe Respiratory Insufficiency Questionnaire (SRI). In addition, srir
provides two simulated data frames containing SRI items:
df.full
: Data frame with no missing values;df.na
: Data frame with some missing values.devtools::install_github("nrkoehler/srir")
library(srir)
df.sri.scores <- scoring_sri(df.full, id = 'id')
head(df.sri.scores)
#> id sri.rc sri.pf sri.as sri.sr sri.ax sri.wb sri.sf sri.ss
#> 1 1 37.5 50.0 46.4 95.8 35 52.8 28.1 49.4
#> 2 2 56.2 45.8 60.7 41.7 45 66.7 59.4 53.6
#> 3 3 50.0 50.0 35.7 45.8 35 58.3 53.1 46.9
#> 4 4 46.9 54.2 39.3 75.0 55 38.9 43.8 50.4
#> 5 5 71.9 50.0 28.6 58.3 50 33.3 40.6 47.5
#> 6 6 53.1 66.7 28.6 45.8 30 47.2 37.5 44.1
library(dplyr)
library(tidyr)
library(ggplot2)
library(forcats)
library(srir)
mydata <- scoring_sri(df.full, id = 'id') %>%
select(-id) %>%
gather(key = scale, value = value) %>%
group_by(scale) %>%
summarize_all(mean) %>%
ungroup()
ggplot(mydata, aes(value, fct_reorder(scale, value))) +
geom_point(size = 3, colour = 'red3') +
geom_text(label = round(mydata$value, 1), size = 3, nudge_x = 0.25, color = 'black') +
theme_bw() +
labs(x='Score',
y = 'Scale',
subtitle = 'Severe Respiratory Insufficiency Questionnaire (SRI)')
Struik, Fransien M., Huib A. M. Kerstjens, Gerrie Bladder, Roy Sprooten, Marianne Zijnen, Jerryll Asin, Thys van der Molen, and Peter J. Wijkstra. 2013. “The Severe Respiratory Insufficiency Questionnaire Scored Best in the Assessment of Health-Related Quality of Life in Chronic Obstructive Pulmonary Disease.” Journal of Clinical Epidemiology 66 (10): 1166–74. doi:10.1016/j.jclinepi.2013.04.013.
Windisch, Wolfram, Klaus Freidel, Bernd Schucher, Hansjörg Baumann, Matthias Wiebel, Heinrich Matthys, and Franz Petermann. 2003. “The Severe Respiratory Insufficiency (SRI) Questionnaire A Specific Measure of Health-Related Quality of Life in Patients Receiving Home Mechanical Ventilation.” Journal of Clinical Epidemiology 56 (8): 752–59. doi:10.1016/S0895-4356(03)00088-X.
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