Table 4.
Microorganism or Microorganism Group | PJI within 1 Month after Surgery n = 844 | PJI 2-3 Months after Surgery n = 243 | PJI 4-12 Months after Surgery n = 277 | PJI > 12 Months after Surgery n = 619 | p-Value |
---|---|---|---|---|---|
Total no. (%)* | |||||
Staphylococcus species | |||||
|
236 (28.2) ** | 107 (44) ** † | 167 (60.3) † | 348 (56.2) | <0.001 |
|
132 (15.6) ** | 68 (28) ** † | 106 (38.3) † | 203 (32.8) | <0.001 |
|
2 (0.2) ** | 3 (1.3) ** | 10 (3.6) | 22 (3.6) | <0.001 |
|
301 (35.7) | 60 (24.7) | 60 (21.7) | 108 (17.4) | <0.001 |
Streptococcus species | 36 (4.3) ** | 25 (10.3) ** | 14 (5.1) | 49 (7.9) | <0.001 |
|
8 (0.9) ** | 11 (4.5) ** | 6 (2.2) | 10 (1.6) | 0.003 |
|
6 (0.7) ** | 7 (2.9) ** | 2 (0.7) † | 18 (2.9) † | 0.003 |
Enterococcus species | 106 (12.6) | 23 (9.5) | 15 (5.4) | 32 (5.4) | <0.001 |
Aerobic Gram-negative bacilli | 396 (46.9) ** | 50 (20.6) ** † | 37 (13.4) † | 37 (13.4) | <0.001 |
|
303 (35.9) ** | 37 (15.2) ** † | 25 (9) † | 48 (7.8) | <0.001 |
|
129 (15.3) | 12 (4.9) | 10 (3.6) | 21 (3.4) | <0.001 |
|
75 (8.9) | 7 (2.9) | 7 (2.5) | 14 (2.3) | <0.001 |
|
73 (8.6) ** | 11 (4.5) ** † | 2 (0.7) † | 6 (1) | <0.001 |
|
48 (5.7) | 2 (0.8) | 4 (1.4) | 3 (0.5 | <0.001 |
|
138 (16.4) ** | 16 (6.6) ** | 11 (4) | 41 (6.6) | <0.001 |
|
128 (15.2) ** | 17 (7) ** | 11 (4) | 35 (5.7) | <0.001 |
Aerobic Gram-positive bacilli | 16 (1.9) | 3 (1.2) | 7 (2.5) | 23 (3.7) | 0.083 |
Anaerobic Gram-positive bacilli | 19 (2.3) ** | 14 (5.7) ** | 16 (5.8) | 61 (9.7) | <0.001 |
|
17 (2) ** | 12 (4.9) ** | 16 (5.8) | 51 (8.2) | <0.001 |
Anaerobic Gram-positive cocci | 8 (0.9) | 4 (1.6) | 5 (1.8) | 13 (2.1) | 0.330 |
Anaerobic Gram-negative bacilli | 12 (1.4) | 2 (0.8) | 1 (0.4) | 5 (0.8) | 0.409 |
Mycobacterium species | 2 (0.2) | 1 (0.9) | 4 (1.4) | 2 (0.3) | 0.068 |
Fungi | 8 (0.9) | 3 (1.2) | 3 (1.1) | 12 (1.9) | 0.418 |
Multidrug-resistant organisms | 202 (23.9) | 20 (8.2) | 20 (7.2) | 43 (6.9) | <0.001 |
|
93 (11) | 14 (5.8) | 14 (5.1) | 30 (4.8) | <0.001 |
|
112 (13.3) | 7 (2.5) | 5 (1.8) | 14 (2.3) | <0.001 |
|
36 (4.3) | 1 (0.4) | 2 (0.7) | 1 (0.3) | <0.001 |
Ciprofloxacin-resistant Gram-negative bacilli | 84 (10) | 5 (2.1) | 4 (1.4) | 11 (1.8) | <0.001 |
Polymicrobial infections | 230 (27.2) | 36 (14.7) | 32 (11.1) | 77 (11.1) | <0.001 |
* Percentages marked in bolded blue are the highest statistically significant percentages in that row. Two percentages marked in bolded blue in the same row with no other indication refer to the highest percentages (both are significantly higher than the other two percentages) with no statistically significant differences between them. ** and † indicate adjacent percentages with statistically significant differences between them in the same row.