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Table 2 Clinical characteristics and outcome measures of trials included in the meta-analysis

From: Effect of oral decontamination with chlorhexidine on the incidence of nosocomial pneumonia: a meta-analysis

Reference SAPS II CAO dental index Incidence of pneumonia ICU LOS (days) Mortality rate
  T C T C T C T C T C
[9] NR NR NR NR 3/173 9/180 7.9 8.5 2/173 10/180
[10] 37 ± 15 33 ± 13 16 ± 7 18 ± 8 4/30 11/30 18 ± 16 24 ± 19 3/30 7/30
[12] NR NR NR NR 4/270 9/291 14 ± 9 13 ± 9 6/270 3/291
[11] 45 ± 18 45 ± 18 19 ± 9 20 ± 9 13/114 12/114 NR NR 31/114 24/114
  1. C, control group; CAO, caries-absent-occluded; ICU, intensive care unit; LOS, length of stay; NR, not reported; SAPS, Simplified Acute Physiology Score; T, treatment group.