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Table 5 Association between antibiotic resistance and biofilm-forming ability of S. maltophilia isolates

From: Evaluation of antibacterial activity of five biocides and the synergistic effect of biocide/EDTA combinations on biofilm-producing and non-producing Stenotrophomonas maltophilia strains isolated from clinical specimens in Iran

Antibiotic

No. (%) of non-susceptible isolates

Biofilm formation ability

p-value

Strong

(n = 45)

Intermediate

(n = 41)

Weak

(n = 7)

None

(n = 4)

Trimethoprim/sulfamethoxazole

14 (14.4)

9

5

0

0

0.88

Imipenem

97 (100)

45

41

7

4

–

Meropenem

97 (100)

45

41

7

4

–

Levofloxacin

2 (2.1)

1

1

0

0

1.00

Minocycline

11 (11.3)

5

6

0

0

0.93

Ticarcillin/clavulanate

59 (60.9)

37

20

1

1

0.001

Tigecycline

13 (13.4)

9

4

0

0

0.34

Ceftazidime

74 (76.3)

40

26

4

0

0.049

Chloramphenicol

38 (39.2)

22

16

0

0

0.189