Social Integration
Cronbach's Alpha Coefficient
library(psy)
cronbach(dat)
$sample.size
[1] 2288
$number.of.items
[1] 13
$alpha
[1] 0.7233
library(psych)
alpha(dat)
Reliability analysis
Call: alpha(x = dat)
raw_alpha std.alpha G6(smc) average_r S/N ase mean sd
0.72 0.72 0.72 0.16 2.6 0.011 2.7 0.51
lower alpha upper 95% confidence boundaries
0.7 0.72 0.74
Reliability if an item is dropped:
raw_alpha std.alpha G6(smc) average_r S/N alpha se
Integr01 0.71 0.70 0.70 0.16 2.4 0.011
Integr02 0.71 0.71 0.71 0.17 2.5 0.011
Integr03 0.70 0.70 0.70 0.16 2.3 0.011
Integr04 0.72 0.72 0.72 0.18 2.6 0.011
Integr05 0.72 0.71 0.71 0.17 2.5 0.011
Integr06 0.71 0.71 0.71 0.17 2.4 0.011
Integr07 0.71 0.71 0.71 0.17 2.4 0.011
Integr08 0.70 0.69 0.70 0.16 2.3 0.012
Integr09 0.70 0.69 0.69 0.16 2.3 0.012
Integr10 0.70 0.70 0.70 0.16 2.3 0.012
Integr11 0.70 0.70 0.70 0.16 2.3 0.011
Integr12 0.70 0.70 0.69 0.16 2.3 0.011
Integr13 0.70 0.70 0.70 0.16 2.3 0.011
Item statistics
n r r.cor r.drop mean sd
Integr01 2296 0.49 0.42 0.36 2.8 1.21
Integr02 2296 0.43 0.33 0.28 2.7 1.00
Integr03 2296 0.51 0.45 0.39 2.7 1.16
Integr04 2296 0.36 0.25 0.20 2.5 0.94
Integr05 2295 0.40 0.29 0.24 2.6 0.90
Integr06 2295 0.44 0.35 0.29 2.6 0.97
Integr07 2293 0.44 0.35 0.29 2.6 0.90
Integr08 2292 0.54 0.49 0.41 2.7 1.07
Integr09 2292 0.54 0.48 0.42 2.7 1.15
Integr10 2292 0.53 0.48 0.41 2.8 1.30
Integr11 2291 0.51 0.46 0.38 2.6 1.04
Integr12 2289 0.53 0.48 0.40 2.6 1.06
Integr13 2288 0.51 0.45 0.38 2.6 1.02
Non missing response frequency for each item
1 2 3 4 miss
Integr01 0.28 0.03 0.33 0.35 0.01
Integr02 0.17 0.18 0.42 0.23 0.01
Integr03 0.27 0.04 0.38 0.31 0.01
Integr04 0.14 0.36 0.32 0.18 0.01
Integr05 0.16 0.19 0.52 0.12 0.01
Integr06 0.18 0.18 0.47 0.17 0.01
Integr07 0.15 0.22 0.49 0.14 0.01
Integr08 0.24 0.05 0.48 0.23 0.01
Integr09 0.28 0.06 0.39 0.27 0.01
Integr10 0.32 0.01 0.22 0.46 0.01
Integr11 0.25 0.10 0.48 0.17 0.01
Integr12 0.26 0.06 0.50 0.17 0.01
Integr13 0.22 0.09 0.51 0.18 0.01