Better health and ageing for all Australians

Pharmaceutical Benefits Advisory Committee

Glossary of P Terms

Glossary to accompany the November 1995 edition of the Guidelines for the Pharmaceutical Industry on Preparation of Submissions to the Pharmaceutical Benefits Advisory Committee

Parallel group (compare with cross-over)
An experimental design where each group in a comparative trial receives only one therapy and does not cross-over to the other therapy.  
Parameter
In epidemiology, a measurable characteristic of a population. In economics, a constant in a model or formula.
Patient-relevant outcome (see Appendix D)
An umbrella term covering any health outcome that is meaningful to the patient (or, if necessary, the next best surrogate outcome), any resource provided as part of on-going therapy of the patient's disease or disorder, any indirect outcome or any intangible outcome. Common examples of patient-relevant outcomes include: primary clinical outcomes, quality of life or utility measures and economic outcomes.
PB11
Pharmaceutical Benefits Form 11: application form for listing a drug on the PBS  
PBAC
Pharmaceutical Benefits Advisory Committee  
PBPA
Pharmaceutical Benefits Pricing Authority  
PBS
Pharmaceutical Benefits Scheme
Perspective
The viewpoint from which an economic analysis is conducted (eg society, government, individual) which defines which costs and outcomes will be examined.  
PES
Pharmaceutical Evaluation Section  
Pool (compare with lump)
An appropriate statistical combination of data from several trials eg using the fixed effects model for dichotomous data.
Power
The ability of a trial to demonstrate a treatment effect if one exists.  
Precision
A measure of the variability or random variation in a set of data. The inverse of the variance.  
Present value
The value of a future cost or benefit after adjusting for time preferences by discounting.  
Prevalence (compare with incidence)
The number of events (eg cases of a disease) in a defined population at a specified point in time divided by the number of people in that population.  
Price
The exchange value of a good or service, most commonly expressed as the amount of money an individual or organisation is prepared to pay to buy a unit of that good or service. The price of a drug on the PBS illustrates why the purchaser may need to be identified as the following could all apply: dispensed price; list price or price to chemist; price to wholesaler or ex-manufacturer's price. For an economic evaluation submitted to the PBAC the dispensed price is generally used for the proposed drug and any other relevant PBS drugs.  
Price premium
The increase in price of a drug over its main comparator(s).
Proposed drug
The drug which is the subject of a submission to the PBAC.  
Prospective data
Data collected after the study was started.