The effect of an organizational level participatory intervention in secondary vocational education on work-related health outcomes: results of a controlled trial

Table 4 Intervention effects on primary and secondary outcomes

	Crude model			Adjusted model^b
	Regression coefficient^a	95% CI	p-value	Regression coefficient	95% CI	p-value^c
Primary outcomes
Need for recovery (0–100)	−0.486	−6.182; 5.209	0.867	−3.170	−12.067; 5.726	0.482
Vitality (0–6)	−0.010	−0.221; 0.200	0.922	0.059	−0.250; 0.368	0.707
Secondary outcomes
Psychological demands (4–16)	0.016	−0.396; 0.428	0.939	−0.133	−0.668; 0.403	0.625
Decision authority (3–12)	−0.262	−0.544; 0.021	0.070	0.025	−0.387; 0.437	0.904
Developmental possibilities (6–30)	−0.432	−1.004; 0.141	0.139	−0.445	−1.339; 0.447	0.325
Social support colleagues (3–12)	−0.174	−0.365; 0.017	0.074	−0.156	−0.417; 0.103	0.236
Social support supervisor (3–12)	0.068	−0.278; 0.415	0.699	0.020	−0.484; 0.524	0.938
Social support management (3–12)	−0.259	−0.633; 0.115	0.174	−0.357	−0.834; 0.120	0.141
Work ability (1–10)	−0.173	−0.627; 0.280	0.452	0.134	−0.492; 0.761	0.672
Job satisfaction (1–5)	−0.124	−0.279; 0.030	0.115	−0.148	−0.366; 0.070	0.183
Commitment (1–5)	−0.151	−0.271; 0.032	0.013*	−0.163	−0.332; 0.006	0.058
Work engagement (0–6)	−0.037	−0.227; 0.154	0.706	−0.099	−0.360; 0.162	0.453
Dedication (0–6)	−0.055	−0.279; 0.169	0.629	−0.172	−0.471; 0.125	0.254
Absorption (0–6)	−0.132	−0.343; 0.078	0.216	−0.288	−0.576; −0.001	0.049*
Occupational self-efficacy (5–30)	0.149	−0.466; 0.763	0.634	0.065	−0.855; 0.985	0.889
Organizational efficacy^c (7–35)	0.165	−1.055; 1.386	0.790	−2.21	−3.906; −0.507	0.012*

Note. The correlation of repeated measurements within the individual (the personal ID level) is taken into account in the mixed model analyses. The clustering effect of workplaces/teams is taken into account by correcting for school location, by adding three dummy variables to the model
* p-value < 0.05
^aThe regression coefficient indicates the difference between the intervention and the control group on average over time, corrected for baseline value of the particular outcome
^bAdjusted for age, gender, school location, and education level. The correlation of repeated measurements within the individual (the personal ID level) is taken into account in the mixed model analyses
^cMeasured for the first time at T1; regression coefficient is an unstandardized B

ISSN: 1471-2458