HRs and their 95% CIs related to increased incidence of psychiatric events after the organisational merger, by the category of experienced organisational change
| Psychiatric events by category of organisational change during a merger | Study population I (N=6511) | Study population II (N=4096) | ||||
| N (No. of cases) | Model 1*, HR (95% CI) | Model 2†, HR (95% CI) | N (No. of cases) | Model 3‡, HR (95% CI) | Model 4§, HR (95% CI) | |
| All-cause psychiatric events | ||||||
| Improved situation | 1452 (49) | 1.02 (0.73 to 1.41) | 1.04 (0.75 to 1.44) | 815 (29) | 1.13 (0.74 to 1.74) | 1.15 (0.75 to 1.76) |
| Unaltered situation | 3841 (136) | 1.00 | 1.00 | 2464 (89) | 1.00 | 1.00 |
| Worsened situation | 1218 (67) | 1.57 (1.17 to 2.10) | 1.60 (1.19 to 2.14) | 817 (45) | 1.57 (1.09 to 2.26) | 1.53 (1.06 to 2.20) |
| Non-alcohol-related psychiatric events | ||||||
| Improved situation | 1452 (43) | 1.03 (0.73 to 1.46) | 1.04 (0.73 to 1.48) | 815 (24) | 1.02 (0.64 to 2.27) | 1.04 (0.65 to 1.65) |
| Unaltered situation | 3841 (118) | 1.00 | 1.00 | 2464 (81) | 1.00 | 1.00 |
| Worsened situation | 1218 (60) | 1.62 (1.18 to 2.21) | 1.63 (1.20 to 2.23) | 817 (41) | 1.55 (1.06 to 2.27) | 1.50 (1.03 to 2.20) |
| Depression | ||||||
| Improved situation | 1452 (35) | 0.92 (0.63 to 1.35) | 0.93 (0.63 to 1.36) | 815 (19) | 0.88 (0.53 to 1.47) | 0.89 (0.53 to 1.48) |
| Unaltered situation | 3841 (107) | 1.00 | 1.00 | 2464 (73) | 1.00 | 1.00 |
| Worsened situation | 1218 (56) | 1.67 (1.20 to 2.30) | 1.67 (1.21 to 2.32) | 817 (39) | 1.62 (1.09 to 2.41) | 1.58 (1.07 to 2.35) |
↵* Adjusted for age and sex at time 3.
↵† Adjusted for age, sex, marital status and occupational status at time 3.
↵‡ Additionally adjusted for premerger decision authority, skill discretion and sense of coherence measured at time 2.
↵§ In addition to above factors adjusted for premerger self-rated health, self-reported psychiatric morbidity and chronic disease measured at time 2.