2022 Fireworks Annual Report | June 2023 | cpsc.gov
8
The source of information on non-occupational, emergency department-treated
fireworks-related injuries is CPSC’s NEISS. NEISS is a probability sample of the U.S. hospitals
with emergency departments.
3
Injury information is taken from the emergency department
record. This information includes the victim’s age and sex, the place where the injury occurred,
the emergency department diagnosis, the body part injured, and the consumer product(s)
associated with the injury. The information is supplemented by a narrative of 140 to 400
characters
4
in length and that often contains a brief description of how the injury occurred.
To supplement the information available in the NEISS record, CPSC staff conducts a
special study of fireworks-related injuries every year during the month around July 4. Staff focus
their efforts on fireworks incidents during this period because, in most years, about two-thirds to
three-quarters of the annual injuries occur then. During this period, hospital emergency-
department staff shows patients pictures of several types of fireworks to help them identify the
type of fireworks device associated with their injuries. The type of fireworks involved in the
incident are then included in the NEISS narrative. In 2022, the special study period lasted from
June 17 to July 17.
After reading the incident case records, including the narrative descriptions of the
fireworks device and the incident scenario, CPSC staff may assign a case for additional
telephone investigation. Staff usually selects cases that involve the most serious injuries and/or
hospital admissions. Serious injuries include eye injuries, finger and hand amputations, and
head injuries. Cases also may be assigned to obtain more information about the incident than
what is reported in the NEISS narrative. In most years, phone interviewers can collect
information for one-fifth to one-half of the cases assigned. Information on the final status of the
telephone interviews conducted during the 2022 special study is in Section 5 and Appendix B of
this report.
In the telephone investigations, information is requested directly from the victim (or the
victim’s parent, if the victim is a minor) about the type of fireworks involved, where the fireworks
were obtained, how the injury occurred, and the medical treatment and prognosis. When the
fireworks device reported in the telephone investigation is different from what is reported in the
NEISS emergency department record, the device reported in the telephone investigation is used
in the data for this report.
As a result of this investigative process, three distinct levels of information may be
available about a fireworks-related injury case. For cases that occur before or after the July 4
special study period, the NEISS record is almost always the only source of information. Many
3
For a description of NEISS, including the revised sampling frame, see Schroeder and Ault (2001). Procedures used
for variance and confidence interval calculations and adjustments for the sampling frame change that occurred in
1997 are found in Marker, Lo, Brick, and Davis (1999). SAS® statistical software for trend and confidence interval
estimation is documented in Schroeder (2000). SAS® is a product of the SAS Institute, Inc. Cary, NC. Lo, Brick, and
Davis (1999). SAS® statistical software for trend and confidence interval estimation is documented in Schroeder
(2000). SAS® is a product of the SAS Institute, Inc. Cary, NC.
4
The maximum available number of characters changed from 142 to 400 characters on January 1, 2019.
THIS DOCUMENT HAS NOT BEEN REVIEWED
OR ACCEPTED BY THE COMMISSION
CLEARED FOR PUBLIC RELEASE
UNDER CPSA 6(b)(1)