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Table 2 Response and expectations of the effect of SDD per study period

From: Physicians' and nurses' opinions on selective decontamination of the digestive tract and selective oropharyngeal decontamination: a survey

  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     
  1. IQR, interquartile range; PRRM, presumed relative reduction in mortality; SDD, selective decontamination of the digestive tract.
  2. * Increase survival physicians based upon calculation PRRM.
  3. significance based upon chi-squared test (effect) or Kruskal-Wallis test (median PRRM).