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 (%)
0.015
0-1
64 (24.7)
45 (36.3)
2-3
38 (14.7)
8 (6.5)
4-7
32 (12.4)
9 (7.3)
8-30
30 (24.2)
> 30
51 (19.7)
17 (13.7)
N/A
10 (3.9)
15 (12.1)