Table 4.

Standardised correlation coefficients (β) for control sociodemographic variables, personality and occupational stress variables as predictors of State-Trait Anxiety Inventory-Trait scores

Predictor	Model 1	Model 2	Model 3	Model 4	Model 5
Control variables
Length of employment (years)	0.08	0.02	0.03	0.04	0.06
Rank	0.06	0.06	0.05	0.10	0.09
Education	0.03	0.01	0.01	0.01	0.01
Origin	−0.07	−0.07	−0.09	−0.07	−0.09
Marital status	0.02	0.03	0.05	0.04	0.06
Barracked	0.13*	0.10	0.10	0.12*	0.12*
Children	−0.06	−0.07	−0.07	−0.05	−0.05
Personality variables
BFQ energy/extraversion		−0.13*	−0.13*	−0.13*	−0.13*
BFQ friendliness/agreeableness		−0.13*	−0.13*	−0.13*	−0.13*
BFQ conscientiousness		−0.04	−0.04	−0.05	−0.05
BFQ emotional stability		−0.33***	−0.33***	−0.32***	−0.32***
BFQ openness		−0.09	−0.09	−0.10	−0.10
Occupational stress variables
DCS Demand			0.01		0.01
DCS Control			−0.03		−0.05
DCS Support			−0.19***		−0.18***
ERI Effort				0.19***	0.19***
ERI Reward				−0.15**	−0.15**
ERI overcommitment				0.05	0.05
Adjusted R2	0.01	0.15***	0.18***	0.20***	0.23***

n=289.

*p<0.05.

**p<0.01.

***p<0.001.

Barracked, no=0, yes=1; BFQ, Big Five Questionnaire^{38 39}; children, no=0, yes=1; DCS, Demand–Control–Support Questionnaire^{16 40}; education, high school or higher=0, lower than high school=1; ERI, Effort–Reward–Imbalance Questionnaire^{17 40}; marital status, single or divorced=0, married or cohabiting=1; origin, Northern Italy=0, Southern Italy=1; rank, agent (‘agent’ or ‘first class agent’)=0, other=1.