Table 2.
Multivariate regression models indicating associations between variables and outcomes of interest
| Variable | OR | SE | 95% CI | P value |
| Model 1: Knowledge about CDC main recommendations for preventing CVC-related CLABSIs | ||||
| Log likelihood = 133.20; χ2 = 54.62 (5 df); p < 0001 | ||||
| Availability of internal protocols about CVC management | 3.79 | 1.36 | 1.88–7.65 | < .001 |
| Use of CDC guidelines as source of information | 2.96 | 0.99 | 1.54–5.69 | .001 |
| Number of years of practice | 1.04 | 0.02 | 1.01–1.07 | .03 |
| Professional role (nurse) | 0.48 | 0.18 | 0.23–0.99 | .05 |
| Gender (female) | 1.68 | 0.54 | 0.89–3.17 | .11 |
| Variable | Coefficient | SE | t | P value |
| Model 2: Positive attitude of HCWs towards the utility of CDC guidelines | ||||
| F (6,293) = 7.23; P = < .0001; R2 = 0.13%; adjusted R2 = 0.11% | ||||
| Knowledge of correct use of antibiotic ointments at the insertion site of CVC | 0.90 | 0.24 | 3.82 | < .001 |
| Knowledge about CDC main recommendations for preventing CVC-related infections | 0.71 | 0.26 | 2.70 | .007 |
| Need of additional information about the prevention of CVC-related infections | 0.62 | 0.27 | 2.29 | .02 |
| Professional role (physicians) | 0.44 | 0.22 | 2.03 | .04 |
| Availability of internal protocols about CVC management | 0.33 | 0.21 | 1.57 | .12 |
| Age | 0.01 | 0.01 | 1.21 | .23 |
| Variable | OR | SE | 95% CI | P value |
| Model 3: HCWs’ adherence about recommended evidence-based practices for preventing CLASBIs | ||||
| Log likelihood = − 164.05; χ2 = 10.02 (3 df); p = .02 | ||||
| Professional role (physicians) | 1.91 | 0.53 | 1.10–3.30 | .02 |
| Need of additional information about the prevention of CVC-related infections | 2.10 | 0.84 | 0.96–4.61 | .06 |
| Availability of internal protocols about CVC management | 1.44 | 0.39 | 0.85–2.44 | .18 |
| Variable | OR | SE | 95% CI | P value |
| Model 4: HCWs with positive attitude towards not removing catheter if patient has fever and perform firstly the insertion site dressing removal to allow thorough examination of the site | ||||
| Log likelihood = − 154.77; χ2 = 21.61 (5 df); p = .0006 | ||||
| Knowledge of correct use of antibiotic ointments at the insertion site of CVC | 2.77 | 1.10 | 1.28–6.01 | .01 |
| Higher number of years of practice | 1.03 | 0.02 | 1.00–1.06 | .04 |
| Knowledge of correct catheter site dressing regime replacement | 1.92 | 0.62 | 1.01–3.63 | .05 |
| Higher educational level (college degree or higher) | 1.79 | 0.52 | 1.01–3.18 | .05 |
| Availability of internal protocols about CVCs management | 1.48 | 0.02 | 0.85–2.57 | .17 |
| Variable | OR | SE | 95% CI | P value |
| Model 5: Correct behaviour regarding the removal of catheter dressing if patients have tenderness at palpation and the performing of a thorough examination of the site | ||||
| Log likelihood = − 294.28; χ2 = 25.27 (4 df); p < .0001 | ||||
| Age | 1.03 | 0.01 | 1.01–1.06 | .02 |
| Knowledge about CDC main recommendations for preventing CVC-related infections | 2.23 | 0.77 | 1.13–4.40 | .02 |
| Perception of high utility of guidelines | 1.79 | 0.51 | 1.03–3.12 | .04 |
| Professional role (physicians) | 1.72 | 0.49 | 0.98–3.02 | .06 |
HCWs, healthcare workers; CVC, central vascular catheter; CDC, U.S. Centers for Disease Control and Prevention; CI, confidence interval; OR, odds ratio; SE, standard error; df, degrees of freedom