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Correlation matrix between factors and total ZBI score and Cronbach’s α.
| Role strain (demands) | Role strain (control) | Personal strain | Worry about performance | ZBI total | |
|---|---|---|---|---|---|
| Role strain (demands) | *** | *** | *** | *** | |
| Role strain (control) | 0.966 | *** | *** | *** | |
| Personal strain | 0.990 | 0.991 | *** | *** | |
| Worry about performance | 0.572 | 0.588 | 0.587 | *** | |
| ZBI total | 0.956 | 0.960 | 0.966 | 0.624 |
*p < 0.05; **p < 0.01; ***p < 0.001.
ZBI, Zarit Burden Interview.
