Codes and Frequencies
For all reported injury/poisoning episodes that occurred within the past 3 months, IRDAY is an NHIS recode that uses the month, date, and year reported to identify the day of the week on which the injury or poisoning episode occurred. Respondents tended to report the 1st or 15th of the month as the most common days, so this variable should be used with caution.
IRDAY is an injury-level variable.
IRDAY is part of a series of variables initiated in 1997 that systematically report persons' injuries and poisonings, the cause, what the person was doing while sustaining the injury or poisoning, and where she/he was at the time of the injury or poisoning. For related variables and additional information, please see the User note on Injuries and Poisonings or use the IPUMS NHIS search function and drop-down menus.
There are no comparability issues.
Prior to 2000, persons were asked about injuries and poisonings separately. To improve comparability across samples, IHIS integrated all episode level data as a single record type. Episodes that were originally released by NHIS in the poisoning files for 1997-1999 can be identified using the variable IRPOISYN.
- 1997-2003: All injuries and poisoning episodes.
- 1997-2003 : PERWEIGHT