Table 1.
Baseline characteristics of Acinetobacter baumannii complex isolates analysed in this study
| 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 |
IQR interquartile range, NA not available