Estimates of prevalence of virus and necrosis and the effect of virus removal on reducing necrosis (values in brackets are 95% confidence intervals).

Virus is presented both singly and in combinations. P(V|N): proportion of necrotic carrots with the virus, P(V|∼N): proportion of non-necrotic carrots with the virus, P(V) prevalence of virus across all carrots, P(N|V): proportion of carrots with the virus that are necrotic, P(N|∼V): proportion of carrots without the virus that are necrotic. E: estimated effect of removing the virus on the prevalence of necrosis expressed as a proportional reduction in the prevalence of necrosis, NE: not estimated. Estimates of prevalence of virus and necrosis and the effect of virus removal on reducing necrosis (values in brackets are 95% confidence intervals).