Epidemiological research about disasters is difficult to perform. Most often, it must be completed retrospectively, since data collection may not be feasible or possible during the disaster.Now, there is a recognized need for a standard method to assess the severity of a disaster.

The aim of this paper is to assess the severity of the disasters that occurred in Italy during the 20th century, using a Disaster Severity Scale (DSS). Another goal is to find a standard method for the classification of previous disasters, test the feasibility and reliability of the use of the Disaster Severity Scale, and improvedisaster management and planning.

Data were obtained from formal reports of the Civil Defence Unit (Italy) and were used to calculate the Disaster Severity Scale score. Disasters were classified into major and minor disasters, according tothe numbers of deaths and severity of the damage. The number of deaths was compared with the obtained Disaster Severity Scale score. A seasonal trend for different types of events was obtained to assess if there is a relationship between the type of event and the time of the year in which it occurred, as related to the weather conditions existing at that time.

There were enough data to calculate a Disaster Severity Scale score for 26 major events that caused death and economic damage, and occurred in Italy between 18 March 1944 and 11 November 1999, and for 82 minor events, that occurred between October 1982 and December 1999. There were some significant peaks varying from different types of events during particular seasons, but the cause for those with the highest incidence is not clear. Events related to natural hazards were the only type of event that reached the highest Disaster Severity Scale when considering the number of deaths, while no events associated with man-made hazards had a Disaster Severity Scale score >8.

The Disaster Severity Scale score could be a reliable index for the assessment of events related to either natural or man-made disasters. Use of the Disaster Severity Scale allows researchers to classify previous hazards by scoring each disaster's severity. Further studies in other countries could be useful to further validate the Disaster Severity Scale.

The New Injury Severity Score (NISS) was introduced in 1997 to improve outcome prediction based on anatomical severity scoring in trauma victims. Studies on populations of blunt trauma victims indicate that the NISS, predicts better than the Injury Severity Score (ISS) mortality post-injury, which is why the NISS has been recommended as the new “gold standard” for severity scoring. However, so far the accuracy of the NISS for penetrating injuries has not been validated against the ISS.

ISS and NISS scores were collected retrospectively for 1,787 war-and landmine victims in North Iraq. All victims only had penetrating injuries. The two tests were compared for prediction of short-term mortality and post-operative complications using Receiver Operating Characteristics (ROC) analysis.

Both the ISS and the NISS predicted mortality with high accuracy (ROC area under curve 0.9). There were no significant differences between the two tests. The predictive accuracy for post-operative complications was moderate for both tests (ROC-AUC <0.8), with the NISS performing significantly better than the ISS.

The NISS does not perform better than the ISS in penetrating injuries. However, this study was done on a low-risk trauma population, thus the results should not be extrapolated to high severity trauma. Due to statistical shortcomings in studies previously published, studies on far larger cohorts are necessary before the NISS should be adopted as the new “gold standard” for severity scoring.

Rock and contemporary music concerts are popular, recurrent events requiring on-site medical staffing.

To describe a novel severity score used to stratify the level of acuity of patients presenting to first-aid stations at these events.

Retrospective review of charts generated at the first-aid stations of five major rock concerts within a 60,000 spectator capacity, outdoor, professional sports stadium. Participants included all concert patrons presenting to the stadiums first-aid stations as patients. Data were collected on patient demographics, history of drug or ethanol usage while at the concert event, first-aid station time, treatment rendered, diagnosis, and disposition. All patients evaluated were retrospectively assigned a “DRUG-ROCK” Injury Severity Score (DRISS) to stratify their level of acuity. Individual concert events and patient dispositions were compared statistically using chi-square, Fisher's exact, and the ANOVA Mean tests.

Approximately 250,000 spectators attended the five concert events. First-aid stations evaluated 308 patients (utilization rate of 1.2 per 1,000 patrons). The most common diagnosis was minor trauma (130; 42%), followed in frequency by ethanol/illicit drug intoxication (98; 32%). The average time in the first-aid station was 23.5±22.5 minutes (± standard deviation; range: 5–150 minutes). Disposition of patients included 100 (32.5%) who were treated and released; 98 (32%) were transported by paramedics to emergency departments (EDs); and 110 (35.5%) signed-out against medical advise (AMA), refusing transport. The mean DRISS was 4.1 (±2.65). Two-thirds (67%) of the study population were ranked as mild by DRISS criteria (score = 1–4), with 27% rated as moderate (score = 5–9), and 6% severe (score >10). The average of severity scores was highest (6.5) for patients transported to hospitals, and statistically different from the scores of the average of the treated and released and AMA groups (p <0.005).

The DRISS was useful in stratifying the acuity level of this patient population. This severity score may serve as a potential triage mechanism for future mass gatherings such as rock concerts.