Comparison of statistical methods of antimicrobial resistance based on clinically isolated bacteria and infection-related non-repetitive bacteria
10.3969/j.issn.1671-9638.2015.10.002
- VernacularTitle:基于所有临床分离菌株与基于感染相关非重复菌株的耐药率比较
- Author:
Yanhong QIN
;
Wenkai NIU
;
Changqing BAI
;
Boqiang SONG
;
Liang WANG
;
Jingya ZHAO
;
Yong CHEN
;
Li HAN
- Publication Type:Journal Article
- Keywords:
Staphylococcus aureus;
Acinetobacter spp .;
microbial,drug resistance;
drug-resistance;
healthcare-associated infection
- From:
Chinese Journal of Infection Control
2015;(10):654-657
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the differences between two statistical methods for evaluating non-sensitivity of pathogenic bacteria to antimicrobial agents,and explore effect of non-consideration of clinical background on evalua-ting extent of bacterial resistance.Methods Data of Staphylococcus aureus and Acinetobacter spp .in a hospital in the first half year of 2008,2010 and 2013 were collected and conducted statistical analysis with two methods (me-thod 1 :based on all clinically isolated bacteria;method 2 :based on infection-related non-repetitive bacteria),two methods for evaluating bacterial non-sensitive rates to antimicrobial agents were compared.Results The non-sensi-tive rates of Acinetobacter spp .to various antimicrobial agents :statistical results by using method 1 were generally higher than those using method 2,absolute difference between two statistical methods was 10.46%-33.77%;the non-sensitive rates of Staphylococcus aureus to various antimicrobial agents :except compound sulfamethoxazole in 2010 and 2013(difference were 6.17% and 10.21 % respectively),penicillin G (difference was 3.86%),erythromy-cin (difference was 2.71 %),and azithromycin in 2013 (difference was 2.43%),statistical results by using method 1 were generally higher than those using method 2,absolute difference between two statistical methods was 0-18.04%.Conclusion There are deviation in the non-sensitive rates of bacterial strains to antimicrobial agents by using two different statistical methods,deviation is larger in Acinetobacter spp ..The resistance level might be incorrectly higher when evaluating the resistance status without considering clinical background of bacteria.
