From: An international tool to measure perceived stressors in intensive care units: the PS-ICU scale
 | PS-ICU T1 scores (with Cronbach’s alpha in parentheses) | ||||||
---|---|---|---|---|---|---|---|
Factor 1 (α = 0.83; ω = 0.84) | Factor 2 (α = 0.83; ω = 0.83) | Factor 3 (α = 0.79; ω = 0.80) | Factor 4 (α = 0.81; ω = 0.82) | Factor 5 (α = 0.76; ω = 0.77) | Factor 6 (α = 0.80; ω = 0.80) | General factor (α = 0.95; ω = 0.95) | |
Correlation between factors (T1 test scores) | |||||||
 Factor 2 (/4) | 0.57*** | – |  |  |  |  |  |
 Factor 3 (/4) | 0.33*** | 0.49*** | – |  |  |  |  |
 Factor 4 (/4) | 0.61*** | 0.56*** | 0.44*** | – |  |  |  |
 Factor 5 (/4) | 0.51*** | 0.49*** | 0.44*** | 0.54*** | – |  |  |
 Factor 6 (/4) | 0.61*** | 0.57*** | 0.48*** | 0.58*** | 0.54*** | – |  |
Test–retest reliability (intraclass correlations with T2 retest scores) | |||||||
 Without significant event only (n = 197) | 0.83 | 0.85 | 0.85 | 0.90 | 0.87 | 0.83 | 0.90 |
 With significant event only (n = 67) | 0.85 | 0.88 | 0.91 | 0.89 | 0.89 | 0.84 | 0.91 |
Convergent validity (correlations with the JCQ) (n = 233) | |||||||
 Psychological demands (/36) | 0.240*** | 0.241*** | 0.303*** | 0.438*** | 0.355*** | 0.333*** | 0.409*** |
 Decisional latitude (/36) | − 0.149** | − 0.117* | − 0.118* | − 0.200*** | − 0.258*** | − 0.227*** | − 0.228*** |
 Colleagues’ support (/24) | − 0.191*** | − 0.122* | 0.050 | − 0.182*** | − 0.308*** | − 0.120* | − 0.193*** |
 Hierarchical support (/20) | − 0.084 | − 0.082 | − 0.082 | − 0.214*** | − 0.289*** | − 0.141** | − 0.192*** |
Concurrent validity (correlations with the MBI-HSS) (n = 249) | |||||||
 Emotional exhaustion (/54) | 0.365*** | 0.386*** | 0.356*** | .586*** | 0.469*** | 0.324*** | 0.539*** |
 Depersonalization (/30) | 0.201*** | 0.067 | 0.208*** | 0.193*** | 0.193*** | 0.172*** | 0.226*** |
 Personal accomplishment (/48) | − 0.094 | − 0.004 | − 0.207*** | − 0.085 | − 0.195*** | − 0.117* | − 0.143** |