|
Wilcoxon Signed Ranks Test for VAP |
||||
| Ranks |
||||
|
|
||||
| N |
Mean Rank |
Sum of Ranks |
||
|
|
||||
| SICU Year 2 – SICU Year 1 |
Negative Ranks |
5 (a) |
8.00 |
40.00 |
| Positive Ranks |
7 (b) |
5.54 |
38.00 |
|
| Ties |
0 (c) |
|||
| Total |
12 |
|||
| SICU Year 3 – SICU Year 1 |
Negative Ranks |
9 (d) |
7.44 |
67.00 |
| Positive Ranks |
3 (e) |
3.67 |
11.00 |
|
| Ties |
0 (f) |
|||
| Total |
12 |
|||
| SICU Year 3 – SICU Year 2 |
Negative Ranks |
9 (g) |
7.22 |
65.00 |
| Positive Ranks |
3 (h) |
4.33 |
13.00 |
|
| Ties |
0 (i) |
|||
| Total |
12 |
|||
|
a. SICU Year 2 < SICU Year 1 b. SICU Year 2 > SICU Year 1 c. SICU Year 2 = SICU Year 1 d. SICU Year 3 < SICU Year 1 e. SICU Year 3 > SICU Year 1 f. SICU Year 3 = SICU Year 1 g. SICU Year 3 < SICU Year 2 h. SICU Year 3 > SICU Year 2 i. SICU Year 3 = SICU Year 2 VAP = ventilator-associated pneumonia | ||||
Papadimos et al. Patient Safety in Surgery 2008 2:3 doi:10.1186/1754-9493-2-3 |
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