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. 2014 Jul 18;18(4):R155. doi: 10.1186/cc13994

Table 2.

ProVent score and observed one-year mortality in Carson’s study[5]and our series

ProVent score Carson’s study (5)
Our series
 
No. Observed mortality percent (95% confidence interval) No. Observed mortality percent (95% confidence interval) P *
0
72
20 (10-29)
19
21 (6-46)
0.9087
1
60
36 (24-48)
63
43 (30-56)
0.2568
2
78
56 (45-68)
64
67 (54-78)
0.0714
3
36
81 (67-94)
37
78 (62-90)
0.6844
4 or 5 14 100 (77-100) 18 94 (73-100) 0.0521

*Comparison between observed one-year mortality rates.