Source attribution of sporadic salmonellosis by a meta-analysis of case-control studies
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A case-control study is a powerful approach among epidemiologists to investigate the causal effect of
exposure and enteric illness. The objective of this work was to synthesise the associations between risk factors
and sporadic salmonellosis by combining results from relevant case-control studies. For the study-specific
exposures to be harmonised within a meta-analysis study, a categorisation scheme was developed that
hierarchically grouped risk factors into travel, host-specific factors and pathways of exposure.
