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        | Download Data Files — Codebook |  
 
        
          | 
          
            | MEPS HC-197F CODEBOOK |  
            | 2017 OUTPATIENT DEPARTMENT VISITS |  
            | DATE:       May 7, 2019 |  
 
          
            | Variable Name: | OPDATEMM |  
            | Description: | EVENT DATE - MONTH |  
            | Format: | 2.0 |  
            | Type: | NUM |  
            | Start: | 49 |  
            | End: | 50 |  
 
        
          
            |  |  |  |  
            | -9 NOT ASCERTAINED |             13 |        134,866 |  
            | -8 DK |              1 |          2,870 |  
            | 1-12 MONTH |         15,764 |    171,482,377 |  
            | TOTAL |         15,778 |    171,620,113 |  
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