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. 2018 Dec 9;8(12):e021366. doi: 10.1136/bmjopen-2017-021366

Table 2.

Description of the study scales (n=329)

WHO-5
Variable Range M (SD) Median Minimum;maximum Missing per cent (n) Cronbach’s α value
WHO-5
 Psychological well-being (five items) Scale from 0 to 25 16.15 (4.60) 17.0 0; 25 0.9 (3) 0.883
JCQ
 Job control
 (nine items)
Scale from 12 to 48 34.71 (4.62) 35.0 21; 46 4.6 (15) 0.740
 Job demands
 (ten items)
Scale from 12 to 48 31.27 (5.42) 31.2 15; 46 8.5 (28) 0.810

JCQ, Job Content Questionnaire; WHO-5, WHO-Five Well-being Index.