Bedankt voor je reactie!
Ik had rosetta 0.3.1 en ufs 0.4.0, en heb deze net geupdate naar 0.3.2 en 0.4.1 (resp).
Om te testen of het nu wel werkt heb ik jouw commando gekopieerd, maar deze geeft bij mij nog steeds geen betrouwbaarheidsinterval:
> data(pp15, package="rosetta");
> rosetta::reliability(
+ pp15,
+ c(
+ "highDose_AttGeneral_good",
+ "highDose_AttGeneral_prettig",
+ "highDose_AttGeneral_slim",
+ "highDose_AttGeneral_gezond",
+ "highDose_AttGeneral_spannend"
+ )
+ );
Information about this analysis:
Dataframe: res$data
Items: highDose_AttGeneral_good, highDose_AttGeneral_prettig, highDose_AttGeneral_slim, highDose_AttGeneral_gezond, highDose_AttGeneral_spannend
Observations: 303
Positive correlations: 10 out of 10 (100%)
Estimates assuming interval level:
Omega (total): 0.79
Omega (hierarchical): 0.8
Revelle's omega (total): 0.79
Greatest Lower Bound (GLB): 0.87
Coefficient H: 0.85
Coefficient alpha: 0.78
Note: the normal point estimate and confidence interval for omega are based on the procedure suggested by Dunn, Baguley & Brunsden (2013) using the MBESS function ci.reliability, whereas the psych package point estimate was suggested in Revelle & Zinbarg (2008). See the help ('?scaleStructure') for more information.
Voor de volledigheid de output van sessionInfo():
> sessionInfo()
R version 3.6.3 (2020-02-29)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 20.04.1 LTS
Matrix products: default
BLAS: /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.9.0
LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.9.0
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=nl_NL.UTF-8 LC_COLLATE=nl_NL.UTF-8 LC_MONETARY=nl_NL.UTF-8 LC_MESSAGES=en_US.UTF-8 LC_PAPER=nl_NL.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C LC_MEASUREMENT=nl_NL.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] rosetta_0.3.2
loaded via a namespace (and not attached):
[1] Rcpp_1.0.6 pillar_1.4.7 compiler_3.6.3 RColorBrewer_1.1-2 plyr_1.8.6 tools_3.6.3 digest_0.6.27 lifecycle_0.2.0 tibble_3.0.4 gtable_0.3.0
[11] nlme_3.1-150 lattice_0.20-41 pkgconfig_2.0.3 rlang_0.4.10 psych_2.0.12 rstudioapi_0.13 GGally_2.0.0 yaml_2.2.1 parallel_3.6.3 xfun_0.20
[21] dplyr_1.0.2 knitr_1.30 generics_0.1.0 vctrs_0.3.5 ufs_0.4.1 grid_3.6.3 tidyselect_1.1.0 reshape_0.8.8 glue_1.4.2 R6_2.5.0
[31] GPArotation_2014.11-1 pander_0.6.3 ggplot2_3.3.2 purrr_0.3.4 farver_2.0.3 magrittr_2.0.1 scales_1.1.1 ellipsis_0.3.1 mnormt_2.0.2 colorspace_2.0-0
[41] labeling_0.4.2 munsell_0.5.0 tmvnsim_1.0-2 crayon_1.3.4
PS: In het Rosettaboek (https://sci-ops.gitlab.io/rosetta-stats/reliability-analysis.html) staan die betrouwbaarheidsintervallen overigens ook niet. Alleen in YouLearn.