TABLE 6.
Odds ratios with 95% confidence interval (CI) and P values for the partial proportional odds model for prescribing an antimicrobial of higher importance
| Odds ratio | 95% CI | P value | |
|---|---|---|---|
| Wound severity grade | 1.97 | 1.42‐2.73 | <.001 * |
| Age (y) | 0.96 | 0.90‐1.02 | .19 |
| Sex | |||
| Male | Baseline | ||
| Female | 0.95 | 0.62‐1.44 | .81 |
| Neuter status | |||
| Entire | Baseline | ||
| Neutered | 0.89 | 0.55‐1.44 | .63 |
| Weight | .87 | ||
| <10 kg | Baseline | ||
| 10‐25 kg | 0.99 | 0.57‐1.77 | .99 |
| 25+ kg | 0.81 | 0.44‐1.48 | .49 |
| Unknown | 0.96 | 0.51‐1.82 | .91 |
| Clinic | <.001 * | ||
| Clinic C | Baseline | ||
| Clinic B (low‐importance vs high‐importance antimicrobials) | 1.21 | 0.44‐3.32 | .72 |
| Clinic B (medium‐importance vs high‐importance antimicrobials) | 0.18 | 0.08‐0.41 | <.001* |
| Clinic A | 1.10 | 0.61‐1.98 | .75 |
| Year of consultation | <.001 * | ||
| 1999‐2004 | Baseline | ||
| 2005‐2009 (low‐importance vs high‐importance antimicrobials) | 5.73 | 2.00‐16.40 | .001* |
| 2005‐2009 (medium‐importance vs high‐importance antimicrobials) | 2.11 | 0.86‐5.18 | .10 |
| 2010‐2014 | 5.23 | 2.41‐11.35 | <.001* |
| 2015‐2019 | 4.23 | 1.81‐9.86 | .001* |
| Type of therapy | |||
| Monotherapy | Baseline | ||
| Polytherapy | 18.93 | 9.61‐37.33 | <.001 * |
| C&S performed | |||
| Not performed | Baseline | ||
| Performed | 1.93 | 0.57‐6.53 | .29 |
| Time of attack | .71 | ||
| <8 h | Baseline | ||
| ≥8 h | 0.76 | 0.38‐1.49 | .42 |
| Unknown | 0.86 | 0.49‐1.50 | .59 |
| Season of attack | .44 | ||
| Spring | Baseline | ||
| Summer | 1.25 | 0.69‐2.27 | .46 |
| Autumn | 0.85 | 0.44‐1.48 | .62 |
| Winter | 1.34 | 0.51‐1.82 | .34 |
| Duration of hospitalization (days) | 1.15 | 1.05‐1.27 | .004 * |
*
Significant at the .05 level. The P values for the individual levels of the categorical variables compared to the baseline are given, in addition to a bolded P value for all levels of that categorical variable combined.