Deriving a Standardised Recommended Respiratory Disease Codelist Repository for Future Research

Figures & data

Table 1 Search Terms Used to Identify EHR-Related Articles on Asthma, COPD and Respiratory Infections

Asthma	COPD	Respiratory Infections (Exemplar Pneumonia/Acute Bronchitis Search Strategy, Replicated for All Conditions [S2])
(“asthma”[tiab] OR “asthma”[mh]) AND (“codeset*” OR “code set*” OR “codelist*” OR “code list*.” OR “H33.” OR “H33” OR “H33%%” OR “J45” OR “J46” OR “Read code*.mp” OR “ICD-10.mp” OR “ICD-11.mp” OR “SNOMED*” OR “ATC” OR “medcode” OR “CPRD” OR “Clinical Practice Research Datalink” OR “Secure Anonymised Information Linkage” OR “SAIL” OR “OPCRD” OR “Optimum Patient Care Research Database” OR “The Health Improvement Network” OR “THIN” OR “QResearch*” “Biobank” OR “ONS” OR “HES” OR “hospital episode statistics” OR “BNF” OR “NHS” OR “National Health Service” OR “Databases, Factual”[mh] OR “Vocabulary, Controlled”[mh]) Filters: 1 January 2018 onwards, Humans, English	Lung diseases obstructive/OR exp bronchitis/OR exp pulmonary disease OR chronic obstructive/OR “COPD.mp” OR “COAD.mp” OR “empysema.mp” OR “chronic bronchitis.mp” OR “Medical records” OR death certificates/OR hospital records/OR medical records/OR “health records.mp” OR personal/OR patient generated health data/OR patient portals/OR medical record linkage/OR “medical records.mp” OR problem-oriented/OR “medical records systems” OR computerized/OR electronic health records/OR “primary care.mp” OR “biobank.mp” OR “cprd.mp” OR “read code.mp” OR “snomed.mp” OR “database management” OR systems/OR electronic data processing/OR consumer health informatics/OR medical informatics/OR health information exchange/OR medical informatics applications/OR databases as topic/OR “databases.mp” OR factual/OR health information systems/OR medical informatics computing/OR public health informatics/OR datasets as topic/OR exp health information management/OR health care common procedure coding system/OR clinical coding Filters: in the last 1 year, Humans, English	(“pneumonia.mp” OR “acute bronchitis.mp”) AND (“codeset*.mp” OR “code set*” OR “codelist*.mp” OR “Read code*.mp” OR “ICD-10.mp” OR “ICD-11.mp” OR “SNOMED CT.mp” OR “SNOMED-CT.mp” OR “ATC.mp” OR “medcode.mp” OR “CPRD.mp” OR “SAIL.mp” OR “OPCRD.mp” OR “Biobank.mp” OR “ONS.mp” OR “HES.mp” OR “BNF.mp” OR “NHS.mp” OR “National Health Service.mp”) AND (”UK.mp” OR “United Kingdom.mp” OR “England.mp” OR “Scotland.mp” OR “Wales.mp” OR “Northern Ireland.mp”) NOT (”COVID-19.mp” OR “coronavirus.mp” OR “SARS-CoV-2.mp” OR “pandemic.mp” OR “COVID.mp”)) Filters: in the last 1 year, Humans, English

Figure 1 Study selection, PRISMA diagram.

Abbreviation: PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-analyses.

Figure 2 Number of codes according to code set terms published in included articles for asthma, COPD, and respiratory infections.