Table 4.

Independent variables entered in the different steps of the logistic and linear regression analyses.

Step (methods logistic/linear regression)	Independent variables at baseline
Step 1 (Enter)	Socioeconomic variables: Age, sex, education, annual income, study group (intervention vs. reference group).
Step 2 (Forward conditional/Forward)	Behavioural factors: Number of logins to the website, smoking habits, alcohol consumption, eating habits, physical activity, working hours.
Step 3 (Forward conditional/Forward)	Psychosocial/cognitive/personality factors: SRH, sleep, concentration ability, mental energy, stress frequency, stress management ability, leisure time, goals, sense of coherence, belief in the future, self-esteem, social support, work mood, reward, and ability to influence work.
Step 4 (Forward conditional/Forward)	Physiological markers: BMI, triglycerides, cholesterol, HDL, CRP (c-reactive protein), DHEA (dehydroepiandosterone), GH (growth hormone), cortisol, TSH (thyroid stimulating hormone), fibrinogen.

Dependent variables were SRH_{increase vs. worsening} & ΔSRH_{12 months-baseline}