Table 1.  Summary table for the NHANES III Individual Foods File (IFF)          
                                                                                
                                                                                
Type of          Recipe      Brand       Preparation    Variable                
food             food?       name?       description    ingr.?                  
                                                                                
Elemental                                                                       
food             no          possible    no             no                      
                                                                                
Single                                                                          
component                                                                       
recipe food      yes         possible    possible       possible                
                                                                                
Combination    components    possible    possible       possible                
food           may include                                                      
               recipe foods                                                     
                                                                                
                                                                               
Table 2.  Example of a partial NHANES III Individual Foods File                 
          (IFF) record                                                          
                                                                                
Meal   Food    Component  Component  Comb.   Recipe   Variable                  
number number  number     foods      food?   food?    ingr.?                    
(DRPMN)(DRPFN) (DRPCN)               (DRPCFF)(DRPREC) (DRPVIF)                  
                                                                                
1       1         1       juice      no       no         no                     
1       2         1       muffin     yes      possible   possible               
1       2         2       butter     yes      no         no                     
1       2         3       jam        yes      no         no                     
1       3         1       fried egg  no       yes        yes                    
1       4         1       coffee     yes      no         no                     
1       4         2       sugar      yes      no         no                     
2       1         1       bun        yes      no         no                     
2       1         2       fried beef yes      yes        yes                    
2       1         3       catsup     yes      no         no                     
2       2         1       soda       no       no         no                     
2       3         1       homemade   no       yes        yes                    
                          cookies                                               
                                                                                
                                                                               
Table 3.  Example of a partial NHANES III Combination Foods File                
          (CFF) record using food examples in Table 2                           
                                                                                
Meal     Food   Combination   Combination     Combination                       
number   number description   type code       food code                         
(DRPMN) (DRPFN) (use DRPTCC   (DRPTCC)        DRPCCODE)                         
                 or DRPCCODE                                                    
                 description)                                                   
                                                                                
                                                                                
1        2       Bread with      09           none assigned                     
                 additions                                                      
                                                                                
1        4       Beverage        07           none assigned                     
                 combination                                                    
                                                                                
2        1       USDA food       01           USDA food code                    
                 code desc.                   assigned                          
                 hamburger                                                      
                 sandwich                                                       
                                                                                
                                                                               
Table 4.  Example of a partial NHANES III Variable Ingredient                   
          File (VIF) record using food examples in Table 2                      
                                                                                
Meal   Food   Component  Component   Variable ingredients                       
number number number     food                                                   
                                                                                
1      3      1          egg         fat used to fry egg; salt                  
                                     use during preparation                     
                                                                                
2      1      2          beef        type of beef; fat used to                  
                                     fry meat; salt use during                  
                                     preparation                                
                                                                                
2      3      1         cookies      type of fat used in batter