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Number of injury conditions

Codes and Frequencies

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For persons who had at least one injury/poisoning episode during the past 3 months, INJCONDITION reports the number of conditions a person had resulting from all injury or poisoning episodes in the past 3 months. If the person was assigned duplicate conditions (i.e., the same condition was assigned to the same person more than once), those duplicate conditions are included in this variable.

INJCONDITION is a person-level variable and is derived from the corresponding ICD-9-CM codes for injury/poisoning episode-level data. NHIS assigned ICD-9-CM codes based on survey questions about injuries.

INJCONDITION 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.


Persons reported episodes that they considered poisonings (e.g., food poisoning and allergic reactions) but that are not considered poisonings based on the ICD-9-CM. These types of episodes were included in the 1997-2003 episode-level data files. Beginning in 2004, episodes that are not considered poisoning episodes based on ICD-9-CM are no longer included in the injury/poisoning data files; additionally non-poisonings are not included in the NHIS-released person-level variables from 1997-1999. This explains the small number of cases where persons have zero injury conditions in 2000-2003. Persons interested in the specific ICD-9-CM conditions reported for each injury should see the injury-level variables IRICD91, IRICD92, IRICD93, IRICD94, IRICD95,
IRICD96, IRICD97, and IRICD98.

Prior to 2000, persons were asked about injuries and poisonings separately; in 2000, these categories were combined and persons were asked about the causes, activities, and locations related to their injuries at the same time.

blah blah blah.
for this variable in particular...fic to the variables before this, but then follow up with a general overviewIn 2000 a screening question regarding the number of injuries or poisonings that were serious enough to seek medical attention was reworded and caused a marked decrease in the number of persons reporting injuries. The question was changed back to the originally intended wording in subsequent years. Response categories change over time as certain causes or locations of injuries become more or less common. Additionally, in 2004 questions that previously asked for verbatim responses (and were later recoded to match pre-defined categories) were changed to specific response categories. For greater detail on these changes, please see the User Note on Injuries and Poisonings .


  • 1998-2017: Persons who had at least 1 injury episode in past 3 months.


  • 1998-2017