Table 2.
Response and expectations of the effect of SDD per study period
| Nurses | Physicians | Total | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1st | 2nd | 3rd | P value | 1st | 2nd | 3rd | P value | 1st | 2nd | 3rd | P value | |
| Response - no. (%) | 372 (74) | 339 (73) | 313 (65) | 85 (89) | 89 (82) | 79 (77) | ||||||
| Prior experience SDD - % | 53 | 74 | 87 | 68 | 85 | 90 | ||||||
| Effect SDD - no. (%) | ||||||||||||
| No effect | 101 (33) | 80 (26) | 63 (22) | 0.017 | 12 (14) | 12 (14) | 3 (4) | 0.065 | 113 (29) | 92 (23) | 66 (18) | 0.004 |
| Decrease pneumonia | 135 (43) | 151 (49) | 165 (58) | 0.002 | 64 (75) | 71 (80) | 65 (84) | 0.354 | 199 (50) | 222 (56) | 230 (68) | 0.001 |
| Increase resistance | 68 (22) | 68 (22) | 48 (17) | 0.209 | 14 (17) | 19 (21) | 21 (27) | 0.247 | 82 (21) | 87 (22) | 69 (19) | 0.624 |
| Decrease resistance | 24 (8) | 21 (7) | 25 (9) | 0.672 | 11 (13) | 13 (15) | 14 (18) | 0.640 | 35 (9) | 34 (9) | 39 (11) | 0.524 |
| Increase survival* | 81 (26) | 83 (27) | 97 (34) | 0.062 | 36 (42) | 45 (51) | 47 (61) | 0.059 | ||||
| Other | 21 (7) | 35 (11) | 25 (9) | 0.129 | 9 (11) | 11 (12) | 13 (17) | 0.478 | 30 (8) | 46 (12) | 38 (11) | 0.145 |
| Median PRRM (IQR) | 3.0 (0-25) | 12.9 (0-25) | 16.7 (0-28.5) | 0.113 | ||||||||
IQR, interquartile range; PRRM, presumed relative reduction in mortality; SDD, selective decontamination of the digestive tract.
* Increase survival physicians based upon calculation PRRM.
significance based upon chi-squared test (effect) or Kruskal-Wallis test (median PRRM).