Characteristics of the Study Population (With 95% Confidence Intervals)
| Historical, n = 809 | Passive, n = 588 | Active, n = 489 | |
|---|---|---|---|
| Age, y (median) | 12 | 12 | 12 |
| Gender, % male | 48.2% (44.8–51.7) | 43.5% (39.5–47.5) | 46.6% (42.2–51.1) |
| Race, % white | 78.1% (75.3–81.0) | 76.6% (73.1–79.9) | 77.9% (74.2–81.6) |
| Resident involved, % yes | 29.5% (26.4–32.7) | 70.6% (66.9–74.3) | 77.5% (73.8–81.2) |
| Referral, % yes | 15.6% (13.1–18.1) | 56.8% (52.8–60.8) | 58.7% (54.3–63.1) |
| PAS distribution | |||
| Low risk | 18.9% (16.2–21.6) | 10.4% (7.9–12.8) | 6.8% (4.5–9.0) |
| Moderate risk | 38.8% (35.5–42.2) | 51.9% (47.8–55.9) | 60.5% (56.2–64.9) |
| High risk | 42.3% (38.9–45.7) | 37.8% (33.8–41.7) | 32.7% (28.6–36.9) |
| Time of day of arrival | |||
| Day | 42.4% (39.0–45.8) | 60.4% (56.4–64.3) | 58.5% (54.1–62.9) |
| Evening | 41.9% (38.5–45.3) | 34.9% (31.0–38.7) | 34.4% (30.1–38.6) |
| Overnight | 15.7% (13.2–18.2) | 4.8% (3.0–6.5) | 7.2% (4.9–9.4) |
| % of time CDS tool used | n/a | n/a | 61.6% (57.2–65.9) |
| % with CBC | 62.8% (59.5–66.1) | 71.9%(68.3–75.6) | 76.9% (73.2–80.1) |
| Negative appendectomy ratea | 17.2% (10.7–23.7) | 8.6% (4.6–12.6) | 16.8% (12.9–20.7) |
| Missed appendicitis rateb | n/a | 0 | 0 |