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Susceptibility pattern of the Klebsiella spp. ESBL phenotypes according to the year of isolation, the chi-square and the p value for each comparison
| % Susceptibility/year |
P value | χ 2 | ||
|---|---|---|---|---|
| 2003 | 2006 | |||
| n = 143 | n = 93 | |||
| Ciprofloxacin | 73.4 | 80.6 | 0.3 | 1.3 |
| Piperacillin/tazo | 86 | 61.3 | <0.0001 | 17.7 |
| Imipenem | 99.2 | 100 | 0.7 | 0.18 |
| Meropenem | 98.3 | 99 | 0.7 | 0.14 |
