Spread of resistant gram negatives in a Sri Lankan intensive care unit

BMC Infectious Diseases

Table 2 Selected antimicrobial sensitivity testing results and MHT results of the RAPD clusters

Characteristic	Cluster 1 n = 22	Cluster 2 n = 5	Cluster 3 n = 3	p value**
Amikacin non-susceptibility^a	17 (77.3%)	4 (80%)	1 (33.3%)	0.313
Gentamicin non-susceptibility	22 (100%)	3 (60%)	2 (66.7%)	0.013
Ceftazidime non-susceptibility	22 (100%)	5 (100%)	1 (33.3%)	0.007
MHT positive	14 (63.6%)	4 (80%)	2 (66.7%)	1.000

^aNon-susceptible = intermediate sensitive + resistant
**p value calculated with the Freeman-Halton extension of Fisher’s exact test using Soper, D.S. (2016). Fisher’s Exact Test Calculator for a 2 × 3 Contingency Table [Software]. Available from http://www.danielsoper.com/statcalc

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