PB89-205538 PART 1 OF 2 United States Department of C S F11 Documentation Agriculture Human Nutrition Information Service Nationwide Food Consumption Survey Nutrition Continuing Survey of Food Intakes Monitoring Division by Individuals NFCS. CSFII Report No. 86-4 Documentation Low-income Women 19 -50 Years and Their Children 1-5 Years, 4 Days 1986 Distributed by: National Technical Information Service REPRODUCED BY U.S. DEPARTMENT OF COMMERCE NATIONAL TECHNICAL INFORMATION SERVICE SPRINGFIELD, VA 22161 Chapter 1 Introduction DATASETa (SFII86-4 CCNTdI M SURVEY OF POCD INTh1 BY IMIVMMS Low-Inds Women 19-50 Years of Age and Their Children 1.5 Years of Age 4 Days. 1986 Tape Contents Fili No. Intruba ram ,p^.p. .............................................. 1 le"Design Data Collection Sample Weights Data messing Nutrient Data Base Data Cleaning Documentatim for Derivation of Calculated Variables Calculated by Rmm Nutritim Information Service 1.BousehoId income as a percent of poverty level 2.Usual amount of money spent per week food broug3.t into the home (by wave) 3.Usual amount of money spent per cae& on food bcazght and eaten away from home (by wave) 4.Body mass index for participating w 5.Is individual the meal planner/ preparer7 6. Race of childnv 7.t ational origin children 8.Fhiployment status of male head of lkmsehold 9.5mloyn ent status of fenale respondent l0, tritive values, n-day average 3-1 Mich waves were cmpleted? 12.Nimber of waves competed 13.Household ninthly income 14.Imputed yearly household income Recommended Dietary Allowances, 1480 References Glossary Dataset Characteristics and Fomnet ......................... 2 File Characteristics File Structure Special Notes Dataset four t Control Courts for Selected Variables ...................... 3 Dataset of Lowy-Incase Wu i 19-50 and Children 1-5 Years of Age, 4 days ........ ................................... 4 51-Character Food Description File ......................... 5 h meal of Food Codes for Individual Intake ................. 6 Food List d Notes a Abbreviations Food Codes Coding Guidelines Used for CSFII 1986 DfRODUCTION (File 1) Note: Yoa are reading a computer printout, microfi &e, or paper copy that describes the dataset containinj 4-day dietary intakes by lm-income women 19 to 50 years of age and their children 1 5 years of age. The infr t iL contained in Files 1, 2, 3, 5, and 6 of the data tape is identical to the information contained in Chapters 1, 2, 3, 5, and 6 of the microfiche or paper copy . File 4 of the data tape contains the survey dataset , while Chapter 4 of the microfiche and paper copy contain copies of the survey instnments (Interviewer's Instruction Book, screening forms and queastiamaires , and the Food Instruction Booklet). This dataset provides 4-day dietary intakes by low-income wamen 19 to 50 years of age of all incomes and their children 1 to 5 years of age surveyed between April 1986 and March 1987. A publication covering these data was published in January 1989 (1). The data were collected using 1-day dietary recalls as part of the 1986 Cant mLing Survey of Food Intakes bbyy Individuals (CSFIII 1986) conducted by the U.S. Department of Agriculture (USDA). Individuals contacted as part of the CSFII 1986 were asked to provide 6 days of dietary data aver a 1-year period. Each day of data was collected at rmciuately 2-month intervals . The first day of data was collected using a persalal interview; subsequent Interviews were collected by tel if possible . Not all of the women and children who agreed to participate and ' o provided the first 1-day recall caatpleted all 6 days. Of the vc en who cai feted the first 1-day dietary recall, 72 percent completed at least 4 s, 64 percent co mpleted at least 5 days, and 45 percent completed all 6 days. This dataset provides data on the dietary intakes by women and children who completed the first 1-day recall and at least 3 additional 1-day recalls. The CSFII was initiated in 1985 to provide timely information on the adequ acy of diets of selected populattia: groups and to provide early indications of dietary changes. Data from the CSFI allow policynmkers to formulate research-based policies for nutrition and food intervention programs , consumer education , food fortification, and regulatory activities. The CSFII cemplements the larger nationwide food c tam surveys ^ yconducted by USDA rmcimatel eve 10 years. Thee surveys in 1936-3 42, 1948 (urban Cnly), and 5 collected infomtiatien on food constptian at the household level. An individual intake component was added to the spring quarter of the 1965-66 survey, and the Nationwide Food Consumption Survey 1977-78 (NETS 1977-78) included individual intakes throughout the entire year. The CSFII is a major component of the National Nutrition Monitoring System (NNMS), a set of related Federal activities intended to provide regular information on the nutritional status of the U.S. Population (2). The Food and Agriculture Act of 1977 (P.L. 95-113, Title XIV) called for new initiatives in research on htman nutrition and food cro ) suptim patterns and directed USDA and the Department of Health and Human Services (Th HS to develop the NIBS. The CSFII was designed to be resp ive both to this Legislation and to recoamendatiars made in reports of recent studies^pertaining to food coassmptim research (3, 4). A mmber of organizatiaass commented on or contributed to the development of the CSFII questiatnaire . These include the National Center for Health Statistics and the Food and Drug Administration of £* HS. the Eavirc mental Protection Agency, the Economic Research Service of the USDA. the House Agriculture Caimittee, the House Ccnnnittee an Science and Technology,, and several universities and food advocacy groups. 1-3 HEMMOEM Sample Design The CSPII 1986 low-income ample was dram from all private households in the ccntezmincus United States. The survey was designed to provide a a itistage stratified area probability sample representative of the 48 contennious States. The stratification plan was organized using estimates of the U.S. population in 1985. The stratification plan took into account geographic location, degree of urbanization, and socioeconomic considerations. Each successive sapling stage selected increasingly smaller, more specific locations. The 48 States were grouped into the 9 census geographic divisions; than all laud areas within the divisions were divided into 3 urbsnizatia, classifications: central city, suburban, and nornetropolitan (see Glossary). The stratification process resulted in a total of 60 strata--l17 central-city, 28 suburban, and 15 nmsretropolitan--rah r.h correspond to the plc distribution, urba^tim, and density of the population within the centenn usaUnited States as reported by the Bureau of the Census. The distribution of these strata is shown below: Census region, Central Suburb Nanmietro- and division city politan --------number of strata -------- Northeast: New England ......... 1 1 1 Middle Atlantic ..... 3 5 1 Midwest: East North Central.. 3 6 2 West North Central.. 1 1 2 South: South Atlantic...... 2 5 3 East South Central.. 1 1 2 West South Central.. 2 3 2 West: Mountain............ 1 1 1 Pacific ............. 3 5 1 Total ................. 17 28 15 Counties, cities, or parts of cities within each stratum were grouped together into smaller, relatively homogeneous units, called primary sampling units (PSU), bas'd an political, eccrrnnic , and demographic characteristics and/or geographical prmdmity. Two PSU were selected from each of the 60 strata resulting in a total of 120 PSU. The PSU were racndaml selected. Tine probability of selection was the ratio of the estimated size of the PSU to the estimated size of the stratum in which that PSU was located. The two PSU were selected from each stratum with replacement; that is, the selection of one PSU as the first PSU did not preclude its selection as the second PSU. Each PSU was then divided geographically along census boundaries into smaller clusters, called area segments , cmtaini g a miniunm of 100 housing units. 1-5 To increase the probability of locating low-income households within each PSU, a tie-step selecti x process was used to identify sste^le area s rents. First, 700 area segsents were chosen with a probability proporUamal to the ratio of the number of housing units in the area segment to the total nnnber of housing units in the PSU. Each of the 700 sets was then assigned to are of three poverty strata according to the proportion of the population in the segaent at or below 125 percent of the poverty guidelines . (This poverty cut-off was the closest published figure to the 130 percent target sought for the COI using a higher sampling rate to select narea segments ifi strata ccn larger poverty a t6tal of was amp.) of syystematic llraryd sin ling procedures.33The follawing tablesd stows thefdistribu initthe tiall lleedd se^nts , those included in tEe final draw, and the sampling rate associated ywith each of the three poverty strata. s^t 1y Segients Sampling saipled subsampled rate ------------number --------- Less than l0' of population at or below 125% of poverty .......... 225 56 0.25 10-24% of population at or below of poverty .................. 325 130 0.40 25% of more of populezticn at or below 125%% of poverty .................. 150 150 1.00 911 strata ............... 700 336 To ensure canparability between the CSFII 1985 and the CSFII 1986 , the same 336 area segments were sampled in the two surveys. However , different housing units were selected for the CSFII 1986 than for the CSFII 1985. The 336 area segments were prelisted to identify the existing housing units within the area baridaries at the time of the survey. New housing units that cane into existance between the 1985 and 1986 surveys were added to the lists before the 1986 sample was selected.