111 Ear complaints in a general population; the Normative data of the Otology Questionnaire Amsterdam in the Netherlands 6 to a disease-, or symptom specific PROMs. The difference between General, Domain specific and Disease or Symptom specific PROMs is visualized in Figure 1. On the whole it can be said that the more specific a PROM is, the narrower its applicability (applicable to few patients, but more specific to a disease or complaint) and the less specific PROM is, like the SF-36, the wider the applicability but the less specific the information on a certain disease or symptom. In between is the domain specific PROM. If there is a variety of patients seen in an ENT practice an ear-domain specific PROM could be a good solution, as using many different PROMs seems not very practical for the ENT practice. The OQUA is a validated domain specific otological questionnaire covering eight relevant ear complaints and their impact on quality of life. The OQUA has a total of 34 items across nine subscales: 8 complaint subscales (earache, pressure sensation, itching, tinnitus, hearing loss, ear discharge, loss of taste and dizziness) and one subscale on the impact of the complaints on quality of life. The OQUA in original language Dutch and translated English version are added as digital Supplement 1. Administration time of the OQUA is approximately 15 minutes. It can be administered digitally and in person. For all 9 subscale scores a subscale sore can be calculated using the OQUA scoring manual (digital supplement 2). Most Electronic Health Record (EHR) software will have the possibility of imbedding a PROM in their program, so that it can also be self-administered online via the patient chart. The outcome can Figure 2: Example of OQUA results in EPIC with red arrows explaining increase in complaints and blue arrows explaining decrease of complaints compared to previous measurement
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