Table 4.

SMBQ score change in the study cohort depending on the number of concurrent risk factors ^a

Exposure a	N	SMBQ score change	p-value
0 risk factors ref	203	−0.34
1 risk factor	232	−0.20	0.11
2 risk factors	144	0.12	<0.001
3-4 risk factors	30	0.32	<0.001

^aPossible risk factors: job strain, risk of unemployment, new job possibilities, and self-perceived economic situation (having a constant unfavourable situation or going from a favourable situation to an unfavourable position).

^refThis category is considered the reference (unexposed) category in the analysis.