Table 4

Median and IQR of alerts per day, unique patients with alerts, sensitivity and positive predictive value associated with the three frameworks in three units at the study hospital: stepdown unit 1, stepdown unit 2 and medical unit

Framework 1
(conservative)
Framework 2
(intermediate)
Framework 3
(liberal)
Number of alerts per day
 Stepdown unit 116 (11–21)37 (31–44)61 (54–68)
 Stepdown unit 24 (2–6.25)12 (8–15)24 (20–27)
 Medical unit2 (0–3)6 (4–9)19 (16–23)
 Total23 (19–29)55 (48.75–63)104 (97.75–113)
Number of patients per day
 Stepdown unit 18 (6–10)18 (16–20)26 (25–28)
 Stepdown unit 23 (2–4)7 (6–9)13 (11–15)
 Medical unit1 (0–2)4 (3–6)13 (11–15)
 Total12 (10–14)29 (26–32)52 (49–55)
Sensitivity
 Stepdown unit 10.0740.1330.178
 Stepdown unit 20.1020.1480.191
 Medical unit0.0400.0740.151
Positive predictive value
 Stepdown unit 10.0650.0500.040
 Stepdown unit 20.0940.0520.032
 Medical unit0.1060.0640.041