Table 3. Adjusted associations between patient-level characteristics and CT scan use, admission, and inpatient intervention from hierarchical multivariable models.
| Odds Ratio (95% CI) | |||
|---|---|---|---|
| Patient Characteristic | Renal Protocol CT Scan | Admission/Transfer | Urologic Intervention (among admitted patients) |
| Age (10 years increments) | 1.04 (1.03–1.05)* | 1.41 (1.40–1.42)* | NS |
| Sex | |||
| Male | 1 (ref) | 1 (ref) | 1 (ref) |
| Female | 0.86 (0.85–0.88)* | 1.65 (1.61–1.68)* | NS |
| Race | |||
| White | 1 (ref) | 1 (ref) | 1 (ref) |
| Black | 0.97 (0.94–1.01) | 0.97 (0.92–1.01) | 0.8 (0.74–0.86)* |
| Hispanic | 1.15 (1.1–1.2)* | 0.96 (0.91–1.01) | 0.93 (0.85–1.01) |
| Other | 1.09 (1.05–1.12)* | 0.90 (0.86–0.93)* | 0.97 (0.91–1.04) |
| Insurance | |||
| Medicare | 1 (ref) | 1 (ref) | 1 (ref) |
| Medicaid | 0.99 (0.95–1.03) | 0.80 (0.76–0.84)* | 1.09 (1.02–1.16) |
| Uninsured | 1.1 (1.06–1.14)* | 0.52 (0.50–0.54)* | 1.18 (1.11–1.26)* |
| Private | 1.21 (1.17–1.25)* | 0.60 (0.58–0.62)* | 1.42 (1.36–1.48)* |
| Prior Visit for Renal Colic in the Data Set | |||
| Inpatient visit | 0.76 (0.72–0.8)* | 2.62 (2.49–2.77)* | 0.86 (0.8–0.93)* |
| ED Visit | 0.32 (0.31–0.33)* | 1.15 (1.11–1.2)* | 1.35 (1.26–1.44)* |
| Comorbidities (only available for admitted patients) | |||
| Pyelonephritis | 1.17 (1.11–1.23) | ||
| Sepsis | NS | ||
| Acute kidney Injury | 1.47 (1.4–1.54) | ||
| Diabetes | 0.92 (0.88–0.97) | ||
| Obesity | 1.27 (1.2–1.35) | ||
| Substance abuse | 0.55 (0.49–0.62) | ||
| Imaging Obtained | |||
| Ultrasound | 0.25 (0.24–0.26) | 6.41 (6.18–6.65) | 0.46 (0.43–0.48) |
| CT Scan | 0.94 (0.91–0.96) | NS | |
* = P <0.05
NS = Not significant, not included in model