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. 2013 Jul 18;3(7):e002791. doi: 10.1136/bmjopen-2013-002791

Table 1.

Sociodemographical and occupational characteristics, personality scores, occupational stress scores and mental health scores of the participants in this study (n=289)

Variable Statistics
Sociodemographical variables
 Age, years (M±DS) 35.4±7.5
 Length of service, years (M±DS) 14.0±7.9
 Rank, superintendent or technical staff, frequency (%) 140 (48.4)
 Education level, high school or higher, frequency (%) 217 (75.1)
 Origin, Northern Italy, frequency (%) 145 (50.2)
 Living in barracks, frequency (%) 162 (56.1)
 Married or cohabiting, frequency (%) 108 (37.4)
Personality variables
 BFQ energy/extraversion (M±DS) 52.9±8.3
 BFQ friendliness/agreeableness (M±DS) 55.3±10.5
 BFQ conscientiousness (M±DS) 52.6±8.6
 BFQ emotional stability (M±DS) 62.0±8.2
 BFQ openness (M±DS) 51.2±9.1
Occupational stress variables
 DCS Demand (M±DS, range 5–20) 13.4±2.02
 DCS Control (M±DS, range 6–24) 13.3±2.7
 DCS Support (M±DS, range 6–24) 18.6±2.9
 DCS job strain (Demand/Control ratio, M±DS) 1.31±0.41
 ERI Effort (M±DS, range 6–30) 15.0±3.2
 ERI Reward (M±DS, range 11–55) 42.3±6.2
 ERI overcommitment (M±DS, range 6–24) 6.9±1.9
 ERI weighted effort/reward ratio (M±DS) 0.70±0.28
Mental health variables
 BDI (M±DS, range 0–63) 3.3±4.2
 STAI-T (M±DS, range 20–50) 27.5±4.3
 MBI emotional exhaustion (M±DS, range 9–36) 17.4±7.9
 MBI depersonalisation (M±DS, range 5–35) 9.3±4.5
 MBI personal accomplishment (M±DS, range 8–56) 42.7±9.8

BDI, Beck Depression Inventory43 44; BFQ, Big Five Questionnaire38 39; DCS, Demand–Control–Support Questionnaire16 40; ERI, Effort–Reward–Imbalance Questionnaire17 40; M, mean; MBI, Maslach Burnout Inventory50 51; STAI-T, State-Trait Anxiety Inventory-Trait.48 49.