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Table 2

The relationship between the presence of integrons and resistance to antibiotics in clinical isolates of Pseudomonas aeruginosa in the present study.

All isolates (n = 200) Integron positives (n = 55) Integron negatives (n = 145)

Antibiotics R* I* S* R* I* S* R* I* S* P value**
No. (%) No. (%) No. (%) No. (%) No. (%) No. (%) No. (%) No. (%) No. (%)
Amikacin 110 9 81 34 2 19 79 3 63 NS*
(55) (4.5) (40.5) (61.8) (3.6) (34.5) (54.4) (2) (43.4)
Cefepime 125 0 75 36 0 19 89 0 56 NS
(62.5) (37.5) (65.4) (34.5) (61.3) (38.6)
Ceftazidime 113 0 67 40 0 15 93 0 52 NS
(66.5) (33.5) (72.7) (27.2) (64.1) (33.8)
Tobramycin 115 0 85 26 0 29 86 0 59 NS
(57.5) (42.5) (47.2) (52.7) (59.3) (40.6)
Gentamicin 124 0 76 39 0 16 85 0 60 NS
(62) (38) (70.9) (29) (58.9) (41.3)
Imipenem 93 12 95 25 3 17 73 5 67 NS
(46.5) (6) (47.5) (45.4) (5.4) (30.9) (50.3) (3.4) (46.2)
Colistin 6 0 194 2 0 53 4 0 141 NS
(3) (97) (3.6) (96.3) (2.7) (97.2)
Ciprofloxacin 125 0 75 33 0 22 88 0 57 NS
(62.5) (37.5) (60) (40) (60.6) (39.3)
Amoxicillinclavulanate 121 0 79 33 0 22 86 0 59 NS
(60.5) (39.5) (60) (40) (59.3) (40.6)
Cefotaxime 149 3 48 39 1 15 109 2 34 NS
(74.5) (1.5) (24) (70.9) (1.8) (27.2) (75.1) (1.3) (23.4)
Ceftazidimeclavulanate 110 0 90 33 0 22 77 0 68 NS
(55) (45) (60) (40) (53.1) (46.8)
*

R: resistant. I: intermediate. S: susceptible. NS: not statistically significant.

**

Statistical analysis was done by Chi-square method using SPSS software. All other statistical analysis were done by descriptive methods.