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Days supplied of prescribed medicine, imputed


For all medication-round fills, RXDAYSUP reports the number of days supplied for the medication fill.

IPUMS MEPS reports the universe for each variable based on a thorough review of the original MEPS documentation. Investigating the data may reveal cases that do not meet the stated universe. Users are encouraged to validate universes for their analyses.

RXDAYSUP is on the prescribed medication-round fill record (see RECTYPE for more details on the different record types in IPUMS MEPS). Variables offered on the medication-round fill record through IPUMS MEPS are derived from the prescribed medicines file provided by AHRQ. Please see our overview of the event, medical conditions, and prescribed medicines variables, including how those variables are offered through IPUMS MEPS, and general considerations to keep in mind when conducting analyses using these variables.


RXDAYSUP is a 4-digit numeric variable.

9995: Medication taken as needed
9996: Not in universe
9997: Unknown-refused
9998: Unknown-not ascertained
9999: Unknown-don't know


There are no comparability issues.


  • 2010-2021: All medication-round fills.


  • 2010-2021



This variable has no flags.