Median response time (minutes) for automated paging and usual care groups
| Automated paging | Usual care | Difference between automated paging and usual care | p Value | |
| (median (IQR)) | (median (IQR)) | |||
| Primary analysis: comparison of critical values with measurable response time (n=165) | 16 min (2–141) (n=81) | 39.5 min (7–104.5) (n=84) | 23.5 min shorter | 0.33 (T=0.97) |
| Secondary analysis: comparison of critical values with documented time of order (n=141) | 12 min (1–124) (n=67) | 36 min (5–97) (n=74) | 24 min shorter | 0.20 (T=1.27) |
| Secondary analysis: comparison of critical values, using imputed data for missing values (n=226) | 30 min (2–155) (n=111) | 43 min (5–132) (n=115) | 13 min shorter | 0.67 (T=0.44) |