You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["HealthCareActivity", "InjuryOrPoisoning", "BodySubstance", "IntellectualProduct", "AnatomicalStructure", "SpatialConcept", "Chemical", "Bacterium", "MedicalDevice", "Organization", "BiomedicalOccupationOrDiscipline", "Finding", "BiologicFunction", "Virus", "ResearchActivity", "ClinicalAttribute", "PopulationGroup", "Eukaryote", "BodySystem", "Food", "ProfessionalOrOccupationalGroup"].

Please return the output as a JSON object of the format: {"Virus": ["HIV", ...], "Bacterium": ["MRSA", ...], "AnatomicalStructure": ["Lung", ...], "BodySystem": ["CNS", ...], "BodySubstance": ["Serum", ...], "Finding": ["Headache", ...], "InjuryOrPoisoning": ["Fracture", ...], "BiologicFunction": ["Death", ...], "HealthCareActivity": ["Biopsy", ...], "ResearchActivity": ["Clinical trial", ...], "MedicalDevice": ["Lenses", ...], "SpatialConcept": ["Camps", ...], "BiomedicalOccupationOrDiscipline": ["Forensic medicine", ...], "Organization": ["WHO", ...], "ProfessionalOrOccupationalGroup": ["Provider", ...], "PopulationGroup": ["Swimmers", ...], "Chemical": ["Gold", ...], "Food": ["Rice", ...], "IntellectualProduct": ["RPAM", ...], "ClinicalAttribute": ["Biomarker", ...], "Eukaryote": ["Dogs", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Improvement of older - person - specific QOL after hearing aid fitting and its relation to social interaction This study aimed to investigate whether hearing aids use is associated with improvement of older - person - specific QOL and whether social interactions modify the association. The WHOQOL-OLD questionnaire was answered by 105 older adults aged 60 to 90 years who were newly fitted hearing aids on the day of fitting and at 2 - 6 months afterward. The associations between the daily hours of hearing aid usage and social relations with changes in the WHOQOL-OLD total score after hearing aids fitting were estimated adjusting for possible confounders. Older persons with hearing loss experienced significant increases in WHOQOL-OLD total score after hearing aid fitting. Regular use of hearing aid was associated with a greater increase in the total score. The combined categorical variable of social relations and hearing aid usage revealed no separate effects of these two variables, but a combined effect; only those with frequent social interactions who used their hearing aid regularly had a significantly greater increase in WHOQOL-OLD total score. This study's findings indicate that hearing aid fitting may be associated with a subsequent improvement in older - person - specific QOL by improvements in hearing due to the hearing aid, and possibly enhanced communication opportunities.
{"AnatomicalStructure": [], "Bacterium": [], "BiologicFunction": ["hearing"], "BiomedicalOccupationOrDiscipline": [], "BodySubstance": [], "BodySystem": [], "Chemical": [], "ClinicalAttribute": [], "Eukaryote": [], "Finding": ["possible", "hearing loss", "possibly", "social interactions", "social interaction"], "Food": [], "HealthCareActivity": ["fitted", "fitting"], "InjuryOrPoisoning": [], "IntellectualProduct": ["WHOQOL-OLD", "answered", "WHOQOL-OLD questionnaire", "categorical"], "MedicalDevice": ["hearing aids", "hearing aid"], "Organization": [], "PopulationGroup": ["Older", "persons", "person", "older adults", "older"], "ProfessionalOrOccupationalGroup": [], "ResearchActivity": ["study\u0027s", "study"], "SpatialConcept": [], "Virus": []}