Table B. Injury and Poisoning Episode Inclusion Criteria by Year: National Health Interview Survey, 1997-present

	Inclusion Criteria
Year	First	Second	Third
1997	Each injury and/or poisoning episode must have required medical advice or treatment	Each injury and/or poisoning episode must have occurred within 99 days or four months of the interview	Injury file: Each episode must have at least one injury classified according to the nature-of-injury codes 800-959 or 980-999 in the Ninth Revision of the International Classification of Diseases (ICD-9-CM) Poisoning file:
1998	Same as 1997	Each injury and/or poisoning episode must have occurred within 104 days or four months of the interview	Same as 1997
1999	Same as 1997	Each injury and/or poisoning episode must have occurred within 105 days or four months of the interview	Same as 1997
2000	Same as 1997	Same as 1998	Each episode must have at least one injury condition or poisoning classified according to the nature-of-injury codes 800-999 in the Ninth Revision of the International Classification of Diseases (ICD-9-CM)
2001	Same as 1997	Same as 1998	Same as 2000
2002	Same as 1997	Same as 1998	Same as 2000
2003	Same as 1997	Same as 1998	Same as 2000
2004	Each injury and/or poisoning episode was serious enough that a medical professional was consulted	Each injury and/or poisoning episode must have reportedly occurred during the past 3 months based on responses to family level questions FIJ.010_01 to FIJ.028_00.000	Each episode must have at least one injury condition or poisoning classified according to the nature-of-injury codes 800-909.2, 909.4, 909.9, 910-994.9, 995.5-995.59, and 995.80-995.85 in the Ninth Revision of the International Classification of Diseases (ICD-9-CM)
2005	Same as 2004	Same as 2004	Each episode must have at least one injury condition or poisoning classified according to the nature-of-injury codes 800-909.2, 909.4, 909.9, 910-994.9, 995.5-995.59, and 995.80-995.85 in the Ninth Revision of the International Classification of Diseases (ICD-9-CM) and one external cause of injury code of E800-E848, E850-E869.9, E880-E929.9, or E950-E999
2006-present	Same as 2004	Same as 2004	Same as 2005

* Inclusion criteria are the conditions (required medical attention, occurred with a certain period of time, and consisted of specified ICD-9-CM nature-of-injury codes and/or external cause codes) an injury or poisoning episode must meet to be included in the appropriate files.