Table 3.
Number of percutaneous injuries and injuries rates (per 100 FTEs) with 95% confidence intervals, according to shift schedule, in the overall sample and stratified by job category and hospital ward in the entire observed period (2007–2016).
| No. of Injuries |
FTE | Injury Rates (95% CI) ^ | Injury Rates by Shift Schedule (95% CI) ^ | p-Value § | |||
|---|---|---|---|---|---|---|---|
| Day Shift Only | Day/Evening Shift | Day/Evening/Night Shift | |||||
| All sample | 535 | 12239.8 | 3.9 (3.6; 4.3) | 3.2 (2.4; 4.3) | 4.6 (3.8; 5.5) | 3.9 (3.4; 4.4) | 0.11 |
| Job category, n (%) | |||||||
| Nurses | 444 | 8813.2 | 4.4 (3.9; 5.0) | 3.9 (2.9; 5.3) | 4.9 (3.8; 6.2) | 4.4 (3.9; 5.1) | 0.55 |
| Nurse assistants | 91 | 3426.6 | 2.8 (2.3; 3.5) | 1.5 (0.6; 3.6) | 3.5 (2.6; 4.7) | 2.5 (1.8; 3.5) | 0.07 |
| Hospital wards, n (%) | |||||||
| ED-IC | 143 | 3327.4 | 3.7 (3.1; 4.5) | 2.2 (0.9; 5.4) | 4.4 (2.9; 6.8) | 3.8 (3.0; 4.7) | 0.35 |
| Medical ward | 244 | 5201.7 | 4.5 (3.9; 5.1) | 4.7 (3.4; 6.4) | 5.3 (4.2; 6.8) | 3.8 (3.2; 4.6) | 0.09 |
| Surgical ward | 148 | 3710.7 | 3.5 (2.9; 4.2) | 1.2 (0.6; 2.8) | 3.4 (2.3; 5.2) | 3.9 (3.1; 5.0) | 0.005 |
FTE: Full-Time Equivalent, computed considering 36 h/week and from the total amount of working hours during the year 2016. ^: Rates are adjusted by age and job category, estimated with Poisson regression models. §: Likelihood ratio Chi-square test for heterogeneity of injury rates across shift schedule categories (2 df), from Poisson regression models. Abbreviations: ED-IC = Emergency Department and Intensive Care.