From: Comparison of warfarin therapy clinical outcomes following implementation of an automated mobile phone-based critical laboratory value text alert system
Manual Alerts
PHS Alerts
P value
Interval to next PT/INR (days)
Number (%)
0.102
0-1
103 (33.3)
97 (31.4)
2-3
37 (12.0)
35 (11.3)
4-7
27 (8.7)
34 (11.0)
8-30
63 (20.4)
78 (25.2)
> 30
62 (20.1)
39 (12.6)
N/A
17 (5.5)
26 (8.4)