Glossary

KS – Kaposi’s sarcoma.

Cancer: lymphoma and sarcoma.

log value – a number expressed as a factor of 10 – ie 2 logs = 10 x 10=100; 3 logs = 10 x 10 x 10=1000. This measurement is used when needing to include very large and very small numbers on the same scale. A reduction by one log is a 90% reduction. A reduction by two logs is a 99% reduction etc.

Log conversion table.

parasite – an animal or plant that get nutrients and support by living on another species.

cancer – disease caused by uncontrolled growth and spread of abnormal cells.

publication bias – the tendency for published results to be different to other trials. For example, trials that show a positive effect are more likely to be reported and published than trials that find no effect.