Prevalence in epidemiology is the proportion of disease found to have been affecting a particular population (typically a disease or a risk factor such as smoking or seat-belt use).
Exclusive analysis by The Daily Telegraph reveals the price of an average basket of groceries at any Coles and Woolworths supermarket in Sydney has jumped a staggering 16 per cent since 2009. That adds as much as $26 a week to the average bill.he analysis found that if a shopper today purchased the identical basket of groceries used in Choice's 2009 Supermarket Survey, they would pay more than $158 for what two years ago cost $136. CommSec economist Craig James said the average household currently spends $185 a week on food.
Assumptions: 1  Average meal out costs $13.00 per person (simple dollar) 2  Average meal home-cooked meal costs $4.00 per person (new york times / self) 3  10 minutes of waiting while eating out (self)  30 minutes of work while cooking in 1  (self) Cooking time valued at $10 per hour (self)  Waiting out time valued at $7 per hour (self)