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. 2019 Jun 7;14:1027–1038. doi: 10.2147/CIA.S197146

Table 4.

Effects of medication use on the occurrence of VAP

Medication use VAP(N=156) NVAP(N=745) χ2 p
Antibiotics use after surgery 4.652 0.031
 Yes 72(20.7) 275(79.3)
 No 84(15.2) 470(84.8)
Duration of antibiotics use after surgery (days) 6.868 0.009
 ≤14 93(15.1) 524(84.9)
 >14 63(22.2) 221(77.8)
Number of antibiotics administered 18.645 <0.001
 ≤3 4(3.4) 115(96.7)
 >3 152(19.4) 630(80.6)
Duration of antibiotics administered (days) 6.101 0.014
 ≤14 6(5.1) 112(94.9)
 >14 150(18.3) 670(81.7)
Combined application of antibiotics 5.098 0.024
 Yes 151(18.1) 682(81.9)
 No 5(7.4) 63(92.6)
Number of combined antibiotics administered 9.508 0.002
 ≤3 22(10.3) 191(89.7)
 >3 134(19.5) 554(80.5)
Duration of combined antibiotics administered (days) 16.732 <0.001
 ≤14 20(8.6) 213(91.4)
 >14 136(20.4) 532(79.6)
Before mechanical ventilation
 Use of acid suppressant agent 107(19.2) 451(80.8) 3.548 0.060
 Use of sedation 48(19.5) 198(80.5) 1.142 0.285
 Use of corticosteroids 58(21.9) 207(78.1) 5.483 0.019
After mechanical ventilation
 Use of acid suppressant agent 135(17.1) 655(82.9) 0.228 0.633
 Use of sedation 88(16.4) 449(83.6) 0.797 0.372
 Use of corticosteroids 65(18.3) 290(81.7) 0.406 0.524

Note: Data are number (percentage).

Abbreviations: NVAP, non-ventilator-associated pneumonia; VAP, ventilator-associated pneumonia.