6461.0 - Australian Consumer Price Index: Concepts, Sources and Methods, 2005  
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Contents >> 8. Collection Methodology >> Food to Clothing and Footwear

FOOD

8.32 The Food group includes all expenditure on food and beverages, other than alcoholic beverages, purchased for human consumption (pet food is included in the Recreation group). The subgroup accounted for approximately 18 per cent, by value, of the CPI basket at the time of the 14th series review. Table 8.1 shows the structure of the Food group. Examples of the products priced and data sources are also shown in the table.

TABLE 8.1: FOOD GROUP INDEX STRUCTURE
Group, subgroup, expenditure classExamples of products priced Outlets/sources of price information

FOOD
Dairy and related productsSupermarkets, convenience stores
MilkFresh milk, flavoured milk, long-life milk, soy milk
CheeseCheese: all types of cheese, including sliced and grated
Ice cream and other dairy productsMilk based ice confectionery in tubs and cartons, cream, yoghurt, dairy snacks, condensed milk, powdered milk
Bread and cereal productsSupermarkets, convenience stores, bakeries, cake retailers
BreadAll types of bread
Cakes and biscuitsCakes, muffins, pastries and biscuits
Breakfast cerealsAll grain based breakfast cereals, including muesli
Other cereal productsAll types of flour, rice, pasta and similar grain based products, including bran
Meat and seafoods Supermarkets, butchers, fish markets, delicatessens
Beef and vealAll cuts of beef and veal; fresh, chilled and frozen, including mince
Lamb and muttonAll cuts of lamb and mutton; fresh, chilled and frozen
Pork All cuts of pork; fresh, chilled and frozen
PoultryWhole poultry, pieces; fresh, chilled, frozen, loose or packaged
Bacon and hamAll styles of bacon and ham; fresh, chilled, loose, packaged and canned
Other fresh and processed meat Sausages, salami and other processed meats, game meats; fresh, chilled, frozen, loose, packaged and canned
Fish and other seafood All seafoods; fresh, chilled, frozen,loose and canned including processed
Fruit and vegetablesSupermarkets, fresh produce markets
FruitAll fruit; fresh,chilled, frozen, dried, loose, packaged and canned
Vegetables All vegetables; fresh, chilled, frozen, dried, loose, packaged and canned, including pickled
Non-alcoholic drinks and snack foodSupermarkets, convenience stores, take away outlets
Soft drinks, waters and juices All carbonated and still non-alcoholic drinks and cordials, including water, fruit and vegetable juices and drinks
Snacks and confectionery Corn and potato chips, nuts, chocolates, lollies, gum, water based ice confectionery, individual serve milk based ice confectionery
Meals out and take away foods
Restaurants, cafes, clubs
Fast food outlets (including those with tables)
Restaurant mealsAll meals consumed in restaurants, hotels, cafes, etc. with full table service
Take away and fast foods All meals prepared for immediate consumption without full table service, including home delivered
Other foodSupermarkets, convenience stores
Eggs Fresh (avian) eggs
Jams, honey and sandwich spreadsJams, syrups, cheese and yeast based spreads and dips
Tea, coffee and food drinksTea leaves, tea bags, instant coffee, chocolate based food drinks
Food additives and condiments Sugar and artificial sweeteners, salt, spices, sauces and pastes and salad dressings
Fats and oilsAll butter, margarine and cooking oils
Food n.e.c.Foods not classified above, including canned and packet soups, baby foods, prepared meals (fresh and frozen requiring cooking/heating)



Specific issues

Price collection

8.33 In general, prices for processed foods are collected quarterly while prices for fresh foods are collected monthly as they tend to fluctuate more.

Areas requiring special pricing procedures

Bread

8.34 The prices of packaged loaves of bread tend to fluctuate a lot. Consequently this product is priced monthly while loaves of fresh baked bread are priced quarterly. Products such as bread rolls are sold by piece rather than by weight and are excluded since it is generally not possible to ensure that they are priced to a constant quality. Price movements for similar products are used to represent price movements for these products. For example, in the case of bread rolls, price movements are represented by the movements in prices for loaves of bread.

Fresh fruit and vegetables

8.35 Fresh fruit and vegetables are usually priced on a ‘volume seller’ basis, whereby the variety of a particular fruit or vegetable in greatest demand is priced. When fruit and vegetables are not available due to being out of season, prices are imputed based on price movements of substitute produce that is available. See paragraph 8.38 for examples of imputation based on price movements of substitute products.

Meals out and take away food

8.36 Restaurant meals are priced at a variety of restaurant types (categorised with regard to level of service and of food styles). Entrees, main meals and desserts are priced separately, and to ensure adequate coverage, main meals based on several types of meat dishes, and a variety of entrees and desserts, are priced.

8.37 In certain cases, the distinction between an eat-in restaurant meal and a take away meal can be blurred. For example, some take away food establishments provide tables on their premises for customers to consume their food, despite their main business being a take away food outlet. A general rule used to distinguish between restaurant and take away meals is that table service will be provided with restaurant meals. Where no table service is provided with meals consumed at the tables provided by an establishment, purchases will be treated as take away meals in the CPI.

Seasonality

8.38 A number of items in the Food group are subject to seasonal influences, especially fresh meat, fresh seafood and fresh fruit and vegetables. When an item is out of season and unavailable, the price of the item is normally moved forward in line with changes observed in prices of close substitute products or items in the same expenditure class. For example, 'Citrus fruits' consists of three different types of fruits, which are grapefruit, mandarins and oranges. If mandarins are out of season, then the price movement for 'Citrus fruits' generated by changes in orange and grapefruit prices will be used to impute the price of mandarins. Refer to Chapter 7 for a more detailed explanation of the treatment of seasonal items.

8.39 In some cases, it is not unusual for products that are out of season to be still available, although the product may be of substandard quality and in low supply. Field officers will not accept prices in these cases and will treat the product as though it were not available.

Quality adjustments

8.40 Quality adjustments are frequently required for items priced within the Food group. Food items sold in packages (e.g. breakfast cereals) often undergo changes in packaging sizes and content mixture. To ensure that such items are priced on a 'constant quality' basis, the collected prices are quality adjusted to remove the effects of changes in packaging size or content.

8.41 Products in the Food group are also subject to regular market innovations; for example, new ingredients added to a food product or an existing product or a new formula used for an established food item. In these cases, it is sometimes difficult to decide whether to treat the innovation as a quality adjustment to an ongoing product or to assume that a new product has been put on the market. Generally, the choice of treatment will depend on the analysis based on sales and market information and close monitoring of the modified products for an extended period.

8.42 An area of the Food group where quality is an important issue is in the pricing of fresh meat, seafood and vegetable products. Mincemeat, for example, can come in normal or premium grade and considerable care is taken by field officers to ensure that comparable grades are priced in each period. Regular assessments of the consumption of each grade type are also conducted to ascertain which grade should be priced. Prices of most meat items are taken from the price displayed in the retail outlets, which are usually quoted on a per kilo basis. However, some particular cuts of meat are sold as an item, for example, a leg of lamb. In these cases, both the actual weight of the item and the associated price are collected to enable a comparison on a per kilo basis, thus removing any price variations caused by weight differences. Similarly, some vegetable produce (e.g. cauliflower and lettuce) are also sold as a whole item and not by weight. To ensure that price comparisons of these items are on a 'constant quality' basis, a per kilo price is estimated by the field officer. Several pieces of the vegetable produce are weighed to determine an average weight and the price is divided by the average weight to derive the per kilo price.

8.43 Assessing the quality change in restaurant meals and takeaway foods can be very difficult as there is no reliable indicator of changes in the quality of the meals. Prices of meals tend to remain the same between one pricing period and another but side salads and vegetables may be adjusted to meet seasonal availability or the weight of cuts of meat in the meals may be varied because of price changes in the meat industry. Field officers will note any changes of this nature where possible and will attach comments to the prices to highlight these situations so that consistent quality adjustments can be made if considered necessary.

8.44 Another quality issue with meals and take away foods is the treatment of 'meal deals'. Although these meal deals are frequently the most popular product sold, the items in the meal deal are priced separately because identifying the quality change for the meal deal as a whole can often be difficult. For example, the items within the meal deal can be varied or the meal deal cancelled entirely, and these changes would present problems in calculating price movements based on the 'constant quality' concept. Many of these meal deals are also likely to be affected by product launch promotions, and new meal deals are only included in the list of items to be priced when they have a proven sales record.


ALCOHOL AND TOBACCO

8.45 The Alcohol and tobacco group includes expenditure on all types of beverages containing alcohol, such as beer, wine and spirits and all tobacco related products such as cigarettes, cigars and loose tobacco. The Alcohol and tobacco group accounted for just over 7per cent of the CPI basket at the time of the 14th series review.

8.46 Table 8.2 shows the structure of the Alcohol and tobacco group. Examples of products priced and the data sources are also shown in the table.

TABLE 8.2: ALCOHOL AND TOBACCO GROUP INDEX STRUCTURE
Group, subgroup, expenditure class Examples of products pricedOutlets/source of price collection

ALCOHOL AND TOBACCO
Alcoholic drinks
BeerDraught beer and beer in cans and bottlesBars, restaurants, clubs, bottle shops
WineBottled or cask wineRestaurants, bottle shops
SpiritsWhisky, rum, brandyBars, restaurants, clubs, bottle shops
TobaccoCigarettes, cigars, pipe tobaccoTobacconists, supermarkets


Specific issues

Price collection

8.47 Nearly all alcoholic products, whether consumed on the premises of the retailer or consumed elsewhere are priced monthly. The only exception is alcohol purchased in restaurants because prices tend to be more stable in these establishments. Tobacco products are priced on a monthly basis. Field officers collect prices of all products in this group.

Areas requiring special pricing procedures

Alcoholic drinks

8.48 Alcoholic products are often subject to specialling activity, where large discounts are offered on a few products for a short time only. Prices of alcoholic drinks are also affected by seasonal celebrations, for example, during the Christmas holiday period and the running of the Melbourne Cup. To ensure price fluctuations caused by specialling activity and seasonal celebrations are captured in the CPI, all alcoholic drinks, except those sold in restaurants, are priced monthly.

8.49 The alcoholic products priced are selected according to the purchasing patterns of consumers. In the case of beer, strong preferences for particular brand names tend to exist and the brands are selected according to analysis of their market shares in the retail beer industry. For sparkling wines, and some types of spirits, the consumer's choice is significantly influenced by the price of the product. Consequently, the brand names selected for pricing are determined according to a ‘volume seller’ basis (explained in paragraph 8.6), where the brand priced in any particular quarter is the best selling (typically the cheapest) variety available from a given list of brands. The consumption of other types of wine and spirits tend to be affected more by locality and, therefore, are priced on a ‘respondent standard’ basis. Under this pricing procedure, field officers will seek advice from the respective retailers to determine which particular brands are the most representative of the purchasing pattern of customers in that geographical region and these brands are priced.

Cigarettes and tobacco

8.50 The brand names of cigarettes, cigars, and pipe tobacco selected for pricing are based on their market shares in the tobacco industry.

Excise duty on alcohol and tobacco

8.51 In accordance with the indexation provisions of the Excise Tariff Act 1921 and the Customs Tariff Act 1987, the rates of customs and excise duties on spirits, beer and tobacco products are changed twice yearly in line with movements in the Consumer Price Index. The new rates take effect from 1 February and 1 August each year. The price change due to the change in the rate of customs or excise duty is collected as part of the general price movement of alcohol and tobacco products.

Quality adjustment

Alcoholic drinks

8.52 Prices of alcoholic drinks, where necessary, are adjusted to ensure that price comparisons are on a 'constant quality' basis. Producers of alcoholic drinks will sometimes make no changes to the prices of their products but will make specification changes that will impact on the quality of these products. Examples of these changes include changing the alcoholic content of a product or modifying the packaging to change the volume content. Adjustments will be made to take into account these specification changes to ensure the concept of pricing to 'constant quality' is maintained. However, no quality adjustment is made to wine products for changes in the alcoholic content as this is a function of the fermentation process and the climate experienced during the grape growing season.

Cigarettes and tobacco

8.53 Prices of cigarette products are quality adjusted where necessary and quality is measured by the quantity of tobacco used in each cigarette. Information is obtained on a regular basis from the major cigarette manufacturers to monitor changes in the quantity of tobacco in cigarettes. If a significant change in the tobacco content of a particular brand of cigarette is identified, the price will be adjusted to remove the effect due to the quality change.


CLOTHING AND FOOTWEAR

8.54 Conceptually, the Clothing and footwear group includes expenditure on clothing, footwear, accessories such as watches and jewellery, clothing services such as dry cleaning and shoe repair services. The Clothing and footwear group accounted for just over 5per cent of the CPI basket at the time of the 14th series review.

8.55 Table 8.3 shows the structure of the Clothing and footwear group. Examples of products priced and the data sources are also shown in the table.


TABLE 8.3: CLOTHING AND FOOTWEAR GROUP INDEX STRUCTURE
Group, subgroup, expenditure classExamples of items pricedOutlets/source of price collection

CLOTHING AND FOOTWEAR
Men's clothing
Men's outerwearSuits, jumpers, coats, pullovers, jeans, business and casual shirts, T-shirts and shortsDepartment stores, discount clothing stores, specialty menswear stores, sports stores
Men's underwear, nightwear and socksBriefs, singlets, pyjamas and socksDepartment stores, specialty menswear stores
Women's clothing
Women's outerwearDresses, skirts, pants, shirts, knitwear, T-shirts, jeans and jacketsDepartment stores, discount clothing stores, specialty women's clothing stores
Women's underwear nightwear and hosieryBras, briefs, nightwear, hosiery and slipsDiscount clothing stores, department stores, specialty women's stores
Children's and infants' clothing
Children’s and infants’ clothingJeans/pants, shorts, T-shirts, socks, skirts, underwear, pyjamas, school clothing, pulloversDiscount clothing stores, department stores, speciality clothing stores
Footwear
Men's footwearMen’s dress shoes, casual shoes, sports shoes and slippersDepartment stores, specialty shoe stores, sports stores
Women's footwearWomen's dress shoes, court shoes, casual shoes, sandals, sports shoes and slippersDepartment stores, specialty shoe stores, sports stores
Children's footwearSchool shoes, dress shoes, general sports shoes and hiking bootsDepartment stores, specialty shoe stores, sports stores
Clothing accessories, supplies and services
Clothing accessories and jewelleryItems complementary to clothing, including wallets, umbrellas, watches, luggage and backpacksDepartment stores, specialty luggage stores, jewellery stores, duty free stores
Fabrics and knitting woolFabrics, wool, dress making patterns, and sewing materialsDepartment stores, specialty fabric stores
Clothing services and shoe repairsClothing and footwear services including dry cleaning, shoe repairs and Laundromat chargesSpecialty shoe repair stores, laundromats, dry-cleaners



Specific issues

Price collection

Clothing

8.56 Clearance’Prices of clothing items that are considered to be volatile, for example, women’s outerwear, are collected monthly. All other clothing items are priced quarterly. ‘Clearance sale’ prices are ignored unless the product concerned is available in sufficient quantity for all prospective customers on the day the price is observed.

8.57 Much of seasonal women’s clothing exhibits a significant fashion content. As a result, from season to season, the individual products can show significant physical changes. Information from garment manufacturers, importers and major retailers is used to determine corresponding replacement products from the new season line-up.

Footwear

8.58 The range of footwear products priced includes business shoes, casual and fashion footwear, school shoes and sports shoes. Brand names selected for pricing are normally widely available across the retail sector and selection is based on information of the market share of the major footwear brand names. Prices are collected quarterly from specialist footwear retail outlets and from large department stores with footwear sections.

Clothing accessories, supplies and services

8.59 Clothing accessories comprise personal effects such as watches, wallets, umbrellas, suitcases and backpacks. Included in clothing supplies are fabrics and haberdashery used for clothing homecraft, repairs and alterations. Examples of items classified under clothing services are dry-cleaning and shoe repairs. Prices of items in this subgroup are collected quarterly by field officers at retail outlets such as jewellers, homecraft shops and clothing repairers.

'Special' prices

8.60 'Sale' or 'special' prices for clothing items are acceptable for the CPI provided:
  • the style name is available to be repurchased from the supplier
  • a full size and colour range is available
  • the ‘special’ requires no reciprocal commitment from the customer (e.g. to make a bulk purchase)
  • the promotional price applies for the full day on which the field officer visits.

8.61 ‘Specials’ on clothing and footwear can often be associated with the cessation of a particular style or product range. In these cases, where there is only a limited range of the product available at the sale price, the drop in price would be ignored, as it would not be representative of genuine price changes. Specialling activity is closely monitored, especially to check whether the specialling is widely available across the range of the product or limited to certain items only.

Seasonal items

8.62 A significant proportion, weighted by expenditure, of clothing items is classified as seasonal, especially for women's clothing. As a result, each quarter there are a significant number of prices that need to be imputed for out-of-season products. Prices for these out-of-season products are moved in line with changes observed in prices of available products .

Sample selection and maintenance

8.63 Clothing respondents are largely selected and weighted by a 'top down' approach. The initial phase of this process is to identify and weight market niches for the different ranges of clothes. Retail chains, store franchises and outlet members of buying group networks are then chosen to represent those niches based on their market shares. This approach results in a cost effective manner of maintaining stable outlet sample structures. Specification choices, however, are not determined by the 'top down' approach but are under continuous review, as many of these products have short life cycles.

Quality adjustment

8.64 Pricing to constant quality is managed by using information from manufacturers, importers and major retailers for making quality adjustments to prices. For clothing items where quality change is suspected because of aberrant price movements, sample purchases of these items are made and the fabric and construction qualities subjected to integrity tests. Outcomes from these quality assessments form the basis of subsequent price adjustments.


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