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. 2020 Oct 19;20:316. doi: 10.1186/s12866-020-02000-5

Table 3.

The number of synergistic and antagonistic combination with clarithromycin and imipenem in each clinical status

FIC index
Synergy + Additive
N = 14 (%)
Indifference + Antagonism
N = 15 (%)
p value
Age
 < 65 years 7 (24.1) 7 (24.1) 0.86
 ≥65 years 7 (24.1) 8 (27.6)
Sex
 Male 6 (20.7) 6 (20.7) 0.88
 Female 8 (27.6) 9 (31.0)
Smoking history
 Yes 3 (10.3) 6 (20.7) 0.43
 No 11 (37.9) 9 (31.0)
With bronchiectasis
 Yes 4 (13.8) 6 (20.7) 0.70
 No 10 (34.5) 9 (31.0)
With immunosuppression
 Yes 10 (34.5) 5 (17.2) 0.040*
 No 4 (13.8) 10 (34.5)
Pretreatment of antibiotics
 Yes 6 (20.7) 8 (27.6) 0.57
 No 8 (27.6) 7 (24.1)
erm (41) gene status
 del + C28 10 (34.5) 10 (34.5) 0.78
 T28 4 (13.8) 5 (17.2)

Antibiotics including clarithromycin (n = 3)

p value < 0.05, ** p value < 0.01

Abbreviations: FIC index fractional inhibitory concentration index, del deletion