Figure 1.

Symptom and diagnosis classification for more than 20 000 documented medical events on Lufthansa flights, 2000–2011. The symptoms are classified by suspected diagnosis. Cardiovascular conditions are grouped together with neurological conditions, including stroke, for the purpose of this diagram. Accidents usually involved luggage falling out of the overhead storage rack or burns and scalds from hot drinks. The category “Other” includes conditions of the ear, nose, and throat, colic, suspected infectious conditions, and psychiatric disturbances