Step 2: How the CPSC Counts Amusement Ride Injuries
NEISS, the National Electronic Injury Surveillance System, works by sampling rather than counting every visit. The CPSC describes it as "a national probability sample of hospitals of differing sizes and locations." The 2024 estimates came from a sample of 100 hospitals, 77 of which reported in 2024. Each injury case in the sample carries a statistical weight, and the national figure is the sum of those weights. For someone who went to an emergency room after a ride, this means their visit may or may not be among the sampled cases.
So 43,826 is a national estimate of emergency-department visits, not a list of incidents each checked and confirmed. The same row of the report shows:
- 1,401 actual cases collected from the sampled hospitals. The CPSC says these "raw" numbers "should not be used for comparative purposes."
- A coefficient of variation of .12, a measure of how precise the estimate is.
- An estimated rate of 13.0 injuries per 100,000 population.
- 42,520 people treated and released, and 1,306 hospitalized or dead on arrival.
The CPSC also notes that "a person's injury may be counted in three product groups."
For deaths, the most-cited federal figure is old. The CPSC's 2005 report stated: "From 1987 to 2002, for mobile and fixed-site amusement rides combined, there were an estimated 4.4 amusement-ride fatalities per year." That figure is historical and is not a current count of amusement park deaths per year.
The 2006 "update" did not give a new estimate. It explained how to query NEISS and repeated a historical breakdown from the 2005 report showing the share of injuries by ride setting: 0.21 fixed, 0.16 mobile, 0.20 inflatable, 0.22 local entertainment, 0.13 unknown site and 0.08 unknown ride type, totaling 1.00. The memo says that using these fractions "assumes that subcategory injury estimates continue to follow historic patterns."
None of these figures is a finding about any company, ride or operator. For a person weighing what happened, the more telling records are usually their own emergency and follow-up medical records, which show what care was given and when.