Results of Univariate and Stepwise Multivariate Unconditional Logistic Regression Model Analysis for Factors Associated With Inappropriate Lyme Disease Serologic Testing
Variable | Univariate COR (95% CI) | Multivariate AOR (95% CI) |
---|---|---|
COR = crude odds ratio; AOR = adjusted odds ratio; CI = confidence interval. | ||
Note: discretionary tests were excluded from this analysis. | ||
Known or suspected tick bite within 30 days of symptom onset | 6.9 (2.9–16.5) | 6.8 (2.6–17.6) |
Test ordered by emergency or urgent care physician | 3.7 (1.2–11.4) | 5.2 (1.3–20.6) |
Test initiated by patient request | 5.8 (2.5–13.6) | |
Test done during summer | 2.5 (1.3–4.7) | |
Patient age less than 40 years | 1.6 (0.8–3.0) | |
Initial evaluation of problem for which test was ordered | 1.5 (0.8–3.1) | |
Test done at Laboratory A | 1.1 (0.4–2.9) | |
Test ordered by physician | 0.9 (0.4–2.3) | |
Clinician in practice less than 10 years | 1.0 (0.5–1.8) | |
Tick habitat exposure during last 30 days | 0.6 (0.1–3.1) | |
Patient hospitalized | 0.3 (0.1–1.0) | |
Patient referred from another clinician | 0.3 (0.1–0.6) |