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Table 5 Characteristics of the patients according to the carrier status of methicillin-resistant Staphylococcus aureus (MRSA)

From: First multicenter study on multidrug resistant bacteria carriage in Chinese ICUs

Characteristics MRSA carriage
  On admission ICU-acquired Not carrier P value*
  n (%) n (%) n (%)  
Total 23 (100.0) 35 (100.0) 628 (100.0)  
Male (yes) 12 (52.2) 21 (60.0) 372 (59.3) 0.93
Severe/critical status on admission 19 (82.6) 30 (85.7) 476 (75.8) 0.22
Previous hospitalization 11 (47.8) 11 (31.4) 168 (26.8) 0.54
Origin of patients before ICUa
- community 2 (8.7) 1 (2.9) 25 (4.0) reference
- emergency room 2 (8.7) 13 (37.1) 100 (16.0) 0.47
- other wards 17 (73.9) 18 (51.4) 459 (73.1) 1.00
- other hospitals 2 (8.7) 3 (8.6) 25 (4.0) 0.61
- others/no data 0 0 16 (2.6) 1.00
Invasive devices before ICU 16 (69.6) 14 (40.0) 283 (45.1) 0.56
Invasive devices in ICU 22 (95.7) 34 (97.1) 599 (95.4) 1.00
- mechanical ventilation 17 (73.9) 21 (60.0) 343 (54.6) 0.53
- indwelling urinary catheter 21 (91.3) 33 (94.3) 575 (91.6) 0.76
- intravascular catheter 17 (73.9) 32 (91.4) 465 (74.0) 0.03
Antibiotic in the last 3 months 16 (69.6) 23 (65.7) 240 (38.2) 0.001
Antibiotic on ICU admission 18 (78.3) 31 (88.6) 537 (85.7) 0.81
- > 1 drug 5 (21.7) 16 (45.7) 211 (33.6) 0.21
Antibiotic in ICU
- none 2 (9.1) 0 32 (5.1) reference
- 1 drug 10 (43.5) 10 (28.6) 294 (46.8) 0.61
- 2 drugs 4 (17.4) 7 (20.0) 195 (31.1) 0.60
- > 2 drugs (3–7) 7 (30.0) 18 (51.4) 107 (17.0) 0.03
- penicillins 0 0 10 (1.6) 1.00
- penicillins + inhibitors 8 (34.8) 15 (42.9) 172 (27.4) 0.05
- cephalosporins 1st & 2nd G 3 (13.4) 5 (14.3) 146 (23.3) 0.30
- cephalosporins 3rd G /aztreonam 5 (21.7) 15 (42.9) 205 (32.6) 0.21
- carbapenems 8 (34.8) 16 (45.7) 121 (19.3) <0.001
- aminoglycosides 0 1 (2.9) 11 (1.8) 0.48
- fluoroquinolones 6 (26.1) 8 (22.9) 102 (16.2) 0.30
- glycopeptides 4 (17.4) 15 (42.9) 98 (15.6) <0.001
- others 6 (26.1) 10 (28.6) 182 (29.0) 0.96
Type of discharge at 28 ICU daysb
- discharged from hospital 3 (13.6) 8 (22.9) 71 (11.3) reference
- remain in ICU 2 (9.1) 6 (17.1) 28 (4.5) 0.27
- other ward 11 (50.0) 18 (51.4) 488 (77.7) 0.008
- death 6 (27.3) 3 (8.6) 36 (5.7) 1.00
Age (year) 71 (40–93) 70 (20–99) 65 (9–95) 0.11
Length of stay (days)
- in hospital before ICU admission 14 (0 – >60) 3 (0 – >60) 6 (0 – >60) 0.12
- in ICU 7 (2 – >28) 12 (3–28) 4 (1 – >28) <0.001
- before MDR acquisition 7 (3–27)  
Total antibiotic-days in ICU 6 (0–26) 6 (2–22) 3 (0–28) <0.001
  1. *Comparing ICU-acquired MDRO patients to non carriers; aData are missing for 3 patients; bData are missing for 6 patients