TABLE.
Percentage of Visits with Urine Studies Sent, Preintervention and Postintervention, and Change in Slope of Urine Studies per Monthly Admission Before and After the Intervention
| Type of Urine Study | Percentage of Monthly Admissions, Preintervention | Percentage of Monthly Admissions, Postintervention | Absolute Rate Difference per 100 Monthly Admissions | Coefficient for Change in Trend over Time (95% CI) [P Value]a | Slope (Coefficient) of Linear Regression, Preinterventiona | Slope (Coefficient) of Linear Regression, Postinterventiona | Estimated Number per 100 Monthly Admissions in January 2016 (with Intervention)a | Estimated Number per Total Monthly Admissions in January 2016 (without Intervention)a |
|---|---|---|---|---|---|---|---|---|
| Total urinalyses | 70.5% | 60.3% | −10.2% | 0.043 (−0.030 to 0.12) [=.24] | −0.016 (0.78) | −0.013 (0.79) | 59.7 | 53.4 |
| Total UC | 18.2% | 11.8% | −6.3% | −0.030 (−0.041 to 0.019) [<.001] | −0.0031 (0.20) | −0.0052 (0.19) | 11.6 | 14.9 |
| Simultaneous urinalyses and UC | 14.9% | 9.1% | −5.8% | −0.039 (−0.052 to 0.025) [<.001] | −0.0018 (0.16) | −0.0037 (0.14) | 8.9 | 13.1 |
| UC following urinalyses within 1–24 hours | 2.5% | 2.1% | −0.66% | −0.0027 (−0.0084 to 0.0030) [=.33] | −0.00038 (0.029) | −0.00055 (0.029) | 2.1 | 2.3 |
| Urinalyses and antibiotics ordered simultaneously | 0.9% | 0.8% | −0.24% | −0.0032 (−0.0066 to 0.00033) [=.073] | 0.00033 (0.0089) | −0.00031 (0.013) | 13.9 | 17.2 |
| Urinalyses followed by antibiotic within 1–24 hours | 4.4% | 3.9% | −0.56% | −0.0087 (−0.015 to 0.0015) [=.021] | 0.00078 (0.041) | −0.00060 (0.048) | 3.8 | 5.3 |
| UC results followed by antibiotic order within 24 hours | 1.7% | 1.5% | −0.24% | −0.0069 (−0.013 to 0.00051) [=.036] | 0.0011 (0.012) | −0.00049 (0.022) | 1.4 | 2.9 |
a
Estimate from interrupted time series analysis.
NOTE: Abbreviations: CI, confidence interval; UC, urine culture.