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.
The USDA uses national food intake data and grocery price information to calculate different costs for a healthy diet at home. The latest numbers for a four-member family: a thrifty food plan, $146 a week; a low-cost food plan, $191 a week; a moderate-cost plan, $239; a liberal plan, $289 a week.Some food waste is built into these costs.ost of feeding a family of four: $146 to $289 a week. Latest statistics give a range of prices for feeding a family of four a healthy diet.