Task 1: Key Concepts About the History of Dietary Data Collection
Federal agencies have 
collected food consumption data for decades.  These data are used for a variety 
of policy making and research purposes in the areas of nutrition monitoring and 
surveillance, dietary guidance, food fortification, environmental exposure 
assessment, and nutrition assistance and education program planning and 
evaluation.  
 
USDA Data Collection
The U.S. Department of 
Agriculture (USDA) has collected national food consumption data for more 
than 70 years.  Initially designed to help people achieve economical and 
nutritious diets, USDA's food consumption surveys gradually broadened in scope 
and purpose.  Nationwide surveys were conducted in 1965-1966, 1977-1978, 
1985-1986, 1987-1988, 1989-1991, 1994-1996, and 1998.  
The most recent surveys, 
called the Continuing Survey of Food Intakes by Individuals (CSFII) and 
conducted in 1989-1991, 1994-1996, and 1998, were combined with USDA's Diet and 
Health Knowledge Survey (DHKS), a telephone survey designed to measure knowledge and 
attitudes about diet and health. Table 1
provides an historical overview of USDA's nationwide food surveys.
Table 1.  Overview of USDA Nationwide Food Surveys, 1936–19981,2 
(click to view) 
 
| 
Survey 
		
 | 
Population | 
Sample | 
Type of data collected   | 
Dietary method | 
| 
		
		1935–1936 Consumer Purchases Study | 
		Farm, village, and city households in five geographic regions | 
		Husband and wife families  | 
		
		Household food use  | 
		7-d list-recall; 7-d food inventory record | 
| 
		1942 Family Spending and Saving in Wartime | 
		Cities, rural nonfarm areas, and farms | 
		
		Housekeeping families and single persons  | 
		
		Household food use  | 
		7-d list-recall | 
| 
		1948 Food Consumption of Urban Families | 
		Urban families nationwide in spring plus surveys in 4 cities | 
		
		Housekeeping families of 2 or more persons  | 
		
		Household food use  | 
		7-d list-recall | 
| 
		1955 Food Consumption of Households | 
		48 states plus a supplement of farm households | 
		
		National, self-weighting probability sample of housekeeping households | 
		
		Household food use  | 
		7-d list-recall | 
| 
		
		1965–1966 Household Food Consumption Survey | 
		48 states  | 
		Two separate samples (basic and low income); selected household members 
		were asked to provide intake information | 
		
		Household food use Individual intake | 
		7-d list-recall 24-h dietary recall in spring only | 
| 
		
		1977–1978 NFCS  | 
		48 states  | 
		Two separate samples (basic and low income); all household members were 
		asked to provide intake information | 
		
		Household food use Individual intake  | 
		7-d list-recall 3 consecutive days: 24-h dietary recall and 2-d diet 
		record | 
| 
		
		1985–1986 CSFII  | 
		48 states  | 
		Two separate samples (basic and low income); women 19–50 y and their 
		children 1–5 y in both y and men 19–50 y in 1985 only | 
		
		Individual intake  | 
		Women and children: 6 nonconsecutive 24-h dietary recalls; d 1 in person 
		and remaining days by telephone. Men: d 1 only | 
| 
		
		1987–1988 NFCS  | 
		48 states  | 
		Two separate samples (basic and low income); all household members were 
		asked to provide intake information | 
		
		Household food useIndividual intake
 | 
		
		7-d list-recall 3 consecutive days: 24-h dietary recall and 2-d diet 
		record | 
| 1989–1991 CSFII | 48 states | Two separate samples (basic and low income); all household members were 
		asked to provide intake information | Individual intake | 3 consecutive days: 24-h dietary recall and 2-d diet record | 
| 
				
		1989–1991 DHKS  | 
		48 states  | 
		Main meal planners/preparers with a completed d 1 intake in CSFII | 
		Dietary knowledge, behavior and attitudes | 
		Telephone follow-up to CSFII | 
| 
		1994–1996 CSFII  | 
		50 states  | 
		Oversampling of the low income population; only selected household 
		members were asked to provide intake information | 
		Individual intake  | 
		Two nonconsecutive 24-h dietary recalls, multiple pass method | 
| 
		1994–1996 DHKS  | 
		50 states | 
		Adults 20 y and over with a completed d 1 intake in CSFII | 
		Dietary knowledge, behavior and attitudes | 
		Telephone follow-up to CSFII | 
| 
		1998 CSFII  | 
		50 states  | 
				
		Children 0–9 y  | 
				
		Individual intake  | 
		Two nonconsecutive 24-h dietary recalls, multiple pass method | 
  
1  
Abbreviations: 
CSFII, Continuing Survey of Food Intakes by Individuals; DHKS, Diet and Health 
Knowledge Survey; NFCS, Nationwide Food Consumption Survey; USDA, United States 
Department of Agriculture.