Table 4 Microbial diagnostic procedure and microbiological diagnosis of patients aged <65 years and ≥65 years with liver abscess
Variables | Total | Aged <65 years | Aged ≥65 years | Odds ratio (CI 95%) | p-value | |||
|---|---|---|---|---|---|---|---|---|
N | % | N | % | N | % | |||
Microbial diagnostic procedure | ||||||||
No culture | 19 | 19.4 | 5 | 12.5 | 14 | 24.1 | 2.2 (0.7, 6.8) | 0.1 |
Culture of abscess | 20 | 20.4 | 7 | 17.5 | 13 | 22.4 | 1.3 (0.5, 3.8) | 0.5 |
Blood culture | 17 | 17.3 | 6 | 15.0 | 11 | 19.0 | 1.3 (0.4, 3.9) | 0.6 |
Culture of abscess + blood culture | 42 | 42.9 | 22 | 55.0 | 20 | 34.5 | 0.4 (0.2, 0.98) | 0.04 |
Results | ||||||||
Positive culture of abscess | 44/65 | 67.7 | 21/30 | 70 | 23/35 | 65.7 | 0.8 (0.3, 2.3) | 0.7 |
Positive blood culture | 20/59 | 33.9 | 9/28 | 32.1 | 11/31 | 35.5 | 1.1 (0.3, 3.4) | 0.8 |
Microorganisms | ||||||||
Escherichia coli | 16 | 16.3 | 2 | 5.0 | 14 | 24.1 | 6.0 (1.3, 28.4) | 0.01 |
Streptococcus anginosus group a | 13 | 13.3 | 7 | 17.5 | 6 | 10.3 | 0.5 (0.7, 1.7) | 0.2 |
Klebsiella spp. b | 11 | 11.2 | 7 | 17.5 | 4 | 6.9 | 0.3 (0.09, 1.2) | 0.1 |
Enterococcus spp. | 5 | 5.1 | 1 | 2.5 | 4 | 6.9 | 2.9 (0.3, 26.8) | 0.3 |
Streptococcus mitis | 4 | 4.1 | 3 | 7.5 | 1 | 1.7 | 0.2 (0.02, 2.1) | 0.2 |
Porphyromonas spp. | 3 | 3.1 | 1 | 2.5 | 2 | 3.4 | 1.4 (0.1, 15.9) | 0.8 |
Pseudomonas aeruginosa | 3 | 3.1 | 2 | 5.0 | 1 | 1.7 | 0.3 (0.03, 3.8) | 0.4 |
Citrobacter spp. | 2 | 2.0 | 0 | 0 | 2 | 3.4 | NA | 0.2 |
Enterobacter cloacae | 1 | 1.0 | 0 | 0 | 1 | 1.7 | NA | 1 |
Fusobacterium spp. | 1 | 1.0 | 1 | 2.5 | 1 | 1.7 | NA | 1 |
Eikenella corrodens | 1 | 1.0 | 0 | 0 | 1 | 1.7 | NA | 1 |
Candida albicans | 1 | 1.0 | 0 | 0 | 1 | 1.7 | NA | 1 |
Magnusiomyces capitatus | 1 | 1.0 | 0 | 0 | 1 | 1.7 | NA | 1 |
Total patients with positive cultures | 54 | 55.1 | 23 | 57.5 | 31 | 53.4 | 0.8 (0.4, 1.9) | 0.7 |
Polymicrobial infections | 7 | 7.1 | 3 | 7.5 | 4 | 6.9 | 0.9 (0.2, 4.3) | 0.9 |