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Table 1 Baseline characteristics of Acinetobacter baumannii complex isolates analysed in this study

From: The epidemiology of carbapenem resistance in Acinetobacter baumannii complex in Germany (2014–2018): an analysis of data from the national Antimicrobial Resistance Surveillance system

  Number of isolates (total) (%) Number of carbapenem-resistant isolates (%) Number of carbapenem-non-resistant isolates (%)
Patient visits
Outpatient clinics 12,169      
Hospitals 26,840      
Total number of isolates 43,948 100 1,856 4.2 42,092 95.8
2014 3437 7.82 261 14.06 3176 7.55
2015 7660 17.43 411 22.14 7249 17.22
2016 10,139 23.07 334 18.00 9805 23.29
2017 11,794 26.84 470 25.32 11,324 26.90
2018 10,918 24.84 380 20.47 10,538 25.04
Care setting type
Outpatient clinics 13,081 29.76 171 9.21 12,910 30.67
Secondary care hospitals 15,853 36.07 781 42.08 15,072 35.81
Tertiary care hospitals 13,022 29.63 769 41.43 12,253 29.11
Specialist care hospitals 1335 3.04 96 5.17 1239 2.94
Prevention and rehabilitation care centres 390 0.89 34 1.83 356 0.85
Other hospitals 115 0.26 1 0.05 114 0.27
Unknown hospital type 152 0.35 4 0.22 148 0.35
German region
Southeast 9327 21.22 199 10.72 9128 21.69
Southwest 8,819 20.07 245 13.20 8,574 20.37
West 14,945 34.01 959 51.67 13,986 33.23
Northwest 5490 12.49 332 17.89 5158 12.25
Northeast 4689 10.67 116 6.25 4573 10.86
NA 678 1.54 5 0.27 673 1.60
Patient gender
Female 15,884 36.1 445 23.98 15,439 36.68
Male 19,962 45.42 1187 63.95 18,775 44.60
NA 8102 18.44 224 12.07 7878 18.72
Sex ratio 0.84   0.45   0.86  
Patient age
< 1 year 1651 3.76 8 0.43 1643 3.90
1–19 years 2844 6.47 34 1.83 2810 6.68
20–39 years 3106 7.07 208 11.21 2898 6.88
40–59 years 7203 16.39 417 22.47 6786 16.12
60–79 years 18,496 42.09 989 53.29 17,507 41.59
≥ 80 years 10,608 24.14 199 10.72 10,409 24.73
NA 40 0.09 1 0.05 39 0.09
Age (median, IQR) 69 (52–79)   66 (53–75)   69 (52–79)  
Clinical specimen material
Upper respiratory 4107 9.35 166 8.94 3941 9.36
Lower respiratory 3496 7.95 400 21.55 3096 7.36
Other respiratory 443 1.01 41 2.21 402 0.96
Blood 997 2.27 81 4.36 916 2.18
Wound 12,254 27.88 342 18.43 11,912 28.30
Urine 8887 20.22 203 10.94 8684 20.63
Other 13,659 31.08 619 33.35 13,040 30.98
NA 105 0.24 4 0.22 101 0.24
  1. IQR interquartile range, NA not available