| Vancomycin MIC | ||||||
---|---|---|---|---|---|---|---|
< 1.5 μg/mL | ≥ 1.5 μg/mL | P value | |||||
2011 | 2012 | Total | 2011 | 2012 | Total | ||
NÂ =Â 58 (%) | NÂ =Â 48 (%) | NÂ =Â 106 (%) | NÂ =Â 37 (%) | NÂ =Â 66 (%) | NÂ =Â 103 (%) | ||
Age | |||||||
 ≤ 50 years old | 26 (44.8) | 8 (16.7) | 34 (32.1) | 13 (35.1) | 19 (28.8) | 32 (31.1) | 0.883 |
 > 50 years old | 29 (50) | 40 (83.3) | 69 (65.1) | 23 (62.2) | 46 (69.7) | 69 (66.9) | 0.884 |
 Not Known | 3 (5.2) | 0 (0) | 3 (2.8) | 1 (2.7) | 1 (1.5) | 2 (1.9) |  |
Gender | |||||||
 Female | 18 (31) | 22 (45.8) | 40 (37.7) | 12 (32.4) | 22 (33.3) | 34 (33) | 0.563 |
 Male | 38 (65.5) | 26 (54.2) | 64 (60.4) | 24 (64.9) | 44 (66.7) | 68 (66) | 0.474 |
 Not Known | 2 (3.4) | 0 (0) | 2 (1.9) | 1 (2.7) | 0 (0) | 1 (0.9) |  |
Clinical diagnosis | |||||||
 Bacteraemia | 25 (43.1) | 24 (50) | 49 (46.2) | 15 (40.5) | 27 (40.9) | 42 (40.8) | 0.486 |
 Skin and soft tissue infections | 26 (44.8) | 20 (41.7) | 46 (43.4) | 20 (54.1) | 31 46.9) | 51 (49.5) | 0.407 |
 Osteomyelitis or septic arthritis | 3 (5.2) | 3 (6.3) | 6 (5.7) | 2 (5.4) | 7 (10.6) | 9 (8.7) | 0.432 |
 Meningitis | 3 (5.2) | 0 (0) | 3 (2.8) | 0 (0) | 1 (1.5) | 1 (0.9) | 0.622 |
 Pericarditis | 1 (1.7) | 1 (2.1) | 2 (1.9) | 0 (0) | 0 (0) | 0 (0) | 0.498 |
Co-morbidities | |||||||
 Diabetes mellitus | 12 (20.7) | 27 (56.3) | 39 (36.8) | 12 (32.4) | 25 (37.9) | 37 (35.9) | 1.000 |
 Hypoglycaemia | 1 (1.7) | 0 (0) | 1 (0.9) | 0 (0) | 0 (0) | 0 (0) | 1.000 |
 Hypertension | 12 (20.7) | 24 (50) | 36 (33.9) | 11 (29.7) | 23 (34.8) | 34 (33) | 1.000 |
 Obesity | 0 (0) | 1 (2.1) | 1 (0.9) | 0 (0) | 0 (0) | 0 (0) | 1.000 |
 Chronic kidney disease and UTI | 9 (15.5) | 19 (39.6) | 28 (26.4) | 5 (13.5) | 25 (37.9) | 30 (29.1) | 0.758 |
 Cancer | 8 (13.8) | 6 (12.5) | 14 (13.2) | 3 (8.1) | 2 (3) | 5 (4.9) | 0.052 |
 Head injury | 3 (5.2) | 10 (20.8) | 13 (12.3) | 6 (16.2) | 10 (15.2) | 16 (15.5) | 0.552 |
 Liver disease | 1 (1.7) | 5 (10.4) | 6 (5.7) | 0 (0) | 2 (3) | 2 (1.9) | 0.280 |
 Respiratory disease | 7 (12.1) | 9 (18.8) | 16 (15.1) | 3 (8.1) | 10 (15.2) | 13 (12.6) | 0.691 |
 Cardiovascular disease | 6 (10.3) | 11 (22.9) | 17 (16) | 2 (5.4) | 8 (12.1) | 10 (9.7) | 0.217 |
 Gastrointestinal disease | 2 (3.4) | 3 (6.3) | 5 (4.7) | 0 (0) | 2 (3) | 2 (1.9) | 0.446 |
 Autoimmune disease | 1 (1.7) | 0 (0) | 1 (0.9) | 0 (0) | 0 (0) | 0 (0) | 1.000 |
 Bone and joint disorder | 3 (5.2) | 4 (8.3) | 7 (6.6) | 0 (0) | 6 (9.1) | 6 (5.8) | 1.000 |
 Endocrine disorder | 0 (0) | 2 (4.2) | 2 (1.9) | 0 (0) | 1 (1.5) | 1 (0.9) | 1.000 |
 Blood disorder | 1 (1.7) | 1 (2.1) | 2 (1.9) | 0 (0) | 2 (3) | 2 (1.9) | 1.000 |
 CMV | 0 (0) | 1 (2.1) | 1 (0.9) | 0 (0) | 0 (0) | 0 (0) | 1.000 |
 Skin disease | 0 (0) | 1 (2.1) | 1 (0.9) | 4 (10.8) | 3 (4.5) | 7 (6.8) | 0.034 |
 None | 3 (5.2) | 4 (8.3) | 7 (6.6) | 0 (0) | 4 (6.1) | 4 (3.9) | 0.538 |
 Not Known | 24 (41.4) | 2 (4.2) | 26 (24.5) | 12 (32.4) | 8 (12.1) | 20 (19.4) | 0.407 |
SCCmec types | |||||||
 SCCmec II | 0 (0) | 0 (0) | 0 (0) | 2 (5.4) | 0 (0) | 2 (1.9) | 0.242 |
 SCCmec III | 32 (55.2) | 21 (43.8) | 53 (50) | 29 (78.4) | 57 (86.4) | 86 (83.5) | 0.0001 |
 SCCmec IV | |||||||
  SCCmec IVa | 4 (6.9) | 3 (6.3) | 7 (6.6) | 1 (2.7) | 1 (1.5) | 2 (1.9) | 0.171 |
  SCCmec IVb | 5 (8.6) | 0 (0) | 5 (4.7) | 0 (0) | 0 (0) | 0 (0) | 0.060 |
   Novel subtypes | 13 (22.4) | 23 (47.9) | 36 (33.9) | 2 (5.4) | 7 (10.6) | 9 (8.7) | 0.0001 |
  SCCmec V | 3 (5.2) | 1 (2.1) | 4 (3.8) | 3 (8.1) | 0 (0) | 3 (2.9) | 1.000 |
  Untypeable | 1 (1.7) | 0 (0) | 1 (0.9) | 0 (0) | 1 (1.5) | 1 (0.9) | 1.000 |