Table 4. Comparison of the efficacies of colistin combinations vs monotherapies after 24 and 48 h of treatmenta.
Strain NO. | CST+MER VS CST | CST+TIG VS CST | CST+TIG VS TIG | CST+FOS VS CST | CST+FD VS CST | CST+RIF VS CST | CST+RIF VS RIF | CST+SUL VS CST | CST+SUL VS SUL | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Δlogb | P valuec | Δlog | P value | Δlog | P value | Δlog | P value | Δlog | P value | Δlog | P value | Δlog | P value | Δlog | P value | Δlog | P value | |
24h of treatment | ||||||||||||||||||
AB-1 | -2.05 | 0.006 | -0.94 | 0.009 | -0.56 | 0.253 | -1.14 | 0.007 | -2.78 | 0.006 | -2.95 | 0.006 | -2.61 | 0.009 | -0.08 | 0.955 | -0.94 | 0.013 |
AB-2 | -2.11 | 0.005 | -0.91 | 0.008 | -0.07 | 0.589 | -1.16 | 0.006 | -2.14 | 0.005 | -2.96 | 0.005 | -2.64 | 0.015 | -0.08 | 0.861 | -1.12 | 0.007 |
AB-3 | -3.02 | <0.001 | 0.08 | 0.162 | 0.00 | 0.448 | -1.25 | <0.001 | -2.93 | <0.001 | -3.02 | <0.001 | -2.59 | 0.004 | -0.32 | 0.002 | -1.31 | 0.006 |
AB-4 | -2.88 | 0.007 | -1.26 | 0.009 | -1.39 | 0.008 | -2.06 | 0.033 | -2.70 | 0.007 | -3.34 | 0.007 | -2.46 | 0.005 | -0.43 | 0.018 | -1.43 | 0.009 |
AB-5 | -3.09 | 0.010 | -1.47 | 0.011 | 0.16 | 0.335 | -1.18 | 0.012 | -2.70 | 0.010 | -4.18 | 0.010 | -2.74 | 0.004 | -1.19 | 0.012 | -0.87 | 0.003 |
AB-6 | -0.91 | 0.008 | 0.16 | 0.169 | -0.02 | 0.844 | 0.20 | 0.066 | -1.84 | 0.006 | -2.29 | 0.006 | -2.40 | 0.004 | 0.03 | 0.951 | -1.29 | <0.001 |
AB-7 | -0.46 | 0.012 | -0.44 | 0.014 | 0.04 | 0.973 | -0.65 | 0.007 | -2.40 | 0.003 | -2.41 | 0.003 | -2.86 | 0.021 | 0.04 | 0.706 | -1.32 | 0.004 |
AB-8 | 0.02 | 0.969 | -0.54 | 0.053 | -0.17 | 0.153 | -0.95 | 0.032 | -1.88 | 0.025 | -2.71 | 0.024 | -2.54 | 0.010 | -0.18 | 0.225 | -1.27 | 0.005 |
AB-9 | -0.20 | 0.211 | -0.42 | 0.105 | -0.02 | 0.625 | -0.73 | 0.063 | -1.56 | 0.041 | -3.11 | 0.039 | -4.32 | 0.086 | 0.45 | 0.047 | -1.63 | 0.004 |
AB-10 | -0.17 | 0.096 | -0.43 | 0.028 | -0.80 | 0.071 | -0.70 | 0.013 | -1.75 | 0.007 | -2.55 | 0.007 | -3.47 | 0.012 | 0.36 | 0.003 | 0.42 | 0.760 |
AB-11 | -0.44 | 0.078 | -0.13 | 0.654 | -0.91 | 0.052 | -0.98 | 0.019 | -2.08 | 0.014 | -2.82 | 0.014 | -2.92 | 0.030 | -0.03 | 0.834 | -0.65 | 0.004 |
AB-12 | 0.12 | 0.446 | -0.67 | 0.022 | -0.31 | 0.288 | -1.03 | 0.014 | -1.41 | 0.012 | -2.90 | 0.011 | -3.71 | 0.001 | -0.16 | 0.196 | -1.36 | 0.001 |
48h of treatment | ||||||||||||||||||
AB-1 | -2.02 | 0.002 | -0.67 | 0.009 | -0.31 | 0.399 | -0.50 | 0.012 | -2.87 | 0.002 | -2.83 | 0.002 | -3.49 | 0.008 | -0.26 | 0.050 | -2.00 | 0.014 |
AB-2 | -2.04 | 0.002 | -0.69 | 0.004 | -0.66 | 0.013 | -0.45 | 0.003 | -2.63 | 0.002 | -2.73 | 0.002 | -2.65 | 0.001 | -0.01 | 0.795 | 0.17 | 0.142 |
AB-3 | -2.59 | 0.020 | -0.47 | 0.056 | -1.69 | 0.002 | -0.54 | 0.045 | -2.54 | 0.019 | -2.78 | 0.019 | -4.83 | 0.007 | 0.16 | 0.447 | -2.04 | 0.014 |
AB-4 | -2.93 | 0.010 | -0.90 | 0.054 | -1.77 | 0.009 | -0.05 | 0.500 | -4.04 | 0.009 | -3.80 | 0.009 | -5.58 | 0.024 | -1.21 | 0.002 | -1.60 | 0.041 |
AB-5 | -2.35 | 0.011 | -0.45 | 0.027 | -0.42 | 0.009 | -0.16 | 0.233 | -2.91 | 0.011 | -3.15 | 0.011 | -3.01 | 0.001 | 0.02 | 0.997 | -1.24 | <0.001 |
AB-6 | -0.11 | 0.985 | -0.25 | 0.243 | -0.92 | 0.005 | 0.12 | 0.150 | -2.56 | 0.001 | -2.95 | 0.001 | -2.85 | 0.005 | 0.01 | 0.867 | -0.88 | 0.001 |
AB-7 | 0.21 | 0.086 | -0.40 | 0.010 | -0.31 | 0.017 | -0.33 | 0.017 | -2.36 | 0.004 | -2.94 | 0.004 | -2.87 | 0.009 | -0.02 | 0.993 | -1.49 | 0.032 |
AB-8 | 0.30 | 0.053 | -0.27 | 0.747 | -0.18 | 0.989 | -0.75 | 0.008 | -1.89 | 0.004 | -3.10 | 0.004 | -3.91 | 0.010 | -0.15 | 0.182 | -0.16 | 0.096 |
AB-9 | -0.23 | 0.117 | -0.33 | 0.029 | -1.21 | 0.001 | -0.34 | 0.015 | -1.44 | 0.004 | -3.04 | 0.004 | -3.17 | 0.001 | -0.34 | 0.017 | -1.50 | 0.002 |
AB-10 | -0.28 | 0.110 | -0.13 | 0.087 | -0.11 | 0.474 | -0.70 | 0.003 | -2.95 | 0.002 | -2.94 | 0.002 | -5.15 | 0.007 | -0.14 | 0.313 | 0.54 | 0.515 |
AB-11 | -0.09 | 0.566 | -0.12 | 0.860 | -1.95 | 0.002 | -0.71 | 0.015 | -2.49 | 0.008 | -2.96 | 0.008 | -2.87 | 0.004 | -0.07 | 0.629 | 0.01 | 0.905 |
AB-12 | -0.04 | 0.870 | 0.12 | 0.535 | -1.49 | 0.007 | -0.25 | 0.109 | -1.59 | 0.017 | -3.34 | 0.016 | -2.97 | <0.001 | -0.12 | 0.283 | -0.88 | 0.004 |
a CST, colistin; MER, meropenem; TIG, tigecycline; FOS, fosfomycin; FD, fusidic acid; RIF, rifampin; SUL, sulbactam.
b Δlog means the log10 recovered CFU of antibiotic combination therapy minus the log10 recovered CFU of monotherapy.
c A P value of < 0.05 indicates significance and is shown in bold.