Statistical analysis of the efficacy of the decontamination treatment

This model was developed and applied by the EFSA Working Group on Working Group on the evaluation of substances used to remove microbial contamination from product of animal origin during the preparatory work on the Scientific Opinion ‘Evaluation of the safety and efficacy of the organic acids lactic and acetic acids to reduce microbiological surface contamination on pork carcasses and pork cuts' (see http://doi.org/10.2903/j.efsa.2018.5482).

The code (SAS and R) has been used to evaluate the efficacy of two organic acids, lactic and acetic acid, intended to be used individually by food business operators during processing to reduce microbiological surface contamination on carcasses and cuts from pork. The reduction is expressed as log10 reduction, i.e. the difference between the means of the log10 concentrations of control group and treated group and corresponding 95% confidence interval (95% CI) when this information was available.

The code may be run using these files:

- data extraction from the file'data_20181010.xlsx '

- References list using the file 'references_20180719.xlsx '

- Appraisal scores using the file 'Appraisal_20181004.xlsx '