VCF0648 External Efficacy Items- Index

QUESTION:
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External efficacy index, 100-pt scale

VALID_CODES:
------------
0.    Least efficacious
.
100.  Most efficacious

MISSING_CODES:
--------------
999.  Not scored in both VCF0609 and VCF0613
Inap. question not used

NOTES:
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GENERAL NOTE:
Built from VCF0609 AND VCF0613.
Component vars are first recoded as follows:  VCF0609,VCF0613:  
1=0,2=100,3=50.  The recoded values are then totaled and divided by 
the number of valid responses.  The result is then rounded.

WEIGHT:
-------
VCF0009/VCF0009a

TYPE:
-----
Numeric  Dec 0

SOURCE_VARS:
------------
1952:  520118,520123 
1956:  560108,560115  
1960:  600107,600114
1964:  640174,640177  
1966:  660115,660118  
1968:  680517,680520  
1970:  700144,700147(type 0) 
1972:  720269,720272  
1974:  742222,742225 
1976:  763815,763818  
1978:  780351,780354
1980:  801030,801033  
1982:  820531,820532
1984:  840312,840313 
1986:  860549 
1988:  880937,880938
1990:  900508,900509  
1992:  926102,926103 
1994:  941037,941038  
1996:  960568,961244 
1998:  980524,980525
2000:  001527,001528  
2002:  025172,025173
2004:  045201,045202