Table 1

Outcomes and measurements

Outcomes	Instrument	Measurements
SP1a: cross-sectional survey questionnaire (online supplemental file 1) Target population: older persons in need of home care (≥60 years), selected according to one of the five care levels as assessed by the Medical Service of the statutory health insurance
OHC-related quality of life (primary outcome)	OHIP-G14	Oral Health Impact Profile, German version, 14 items34 35
Health-related quality of life	EQ-5D-5L	Health-related quality of life questionnaire, 6 items38
Sociodemographic, medical care, dental care, oral health and information of the need for support, structure, process and outcome parameter	Questionnaire developed for the study	Questionnaire, 27 items Barriers and facilitating factors of quality of OHC. Extent of cooperation between healthcare providers.  Explanatory patterns from the perspective of the care providers.  Reconstruction of the OHC process. Strengths/weaknesses profile of OHC. Catalogue of requirements for OHC pathway as working basis for SP4.
SP1b: FG and personal interviews Target population: stakeholders of oral and general healthcare
Structure, process and outcome parameter	Specifically developed, semistructured focus group and interview guidelines	Barriers and facilitating factors of quality of OHC. Extent of cooperation between healthcare providers. Explanatory patterns from the perspective of the care providers.  Reconstruction of the OHC process.  Strengths/weaknesses profile of OHC.  Catalogue of requirements for OHC pathway as working basis for SP4.
SP2: retrospective cohort study—health insurance claims data analysis Target population: older persons (≥60 years) insured with DAK
Excess discontinuations of regular utilisation of OHC. General health status and extent of systemic diseases. Healthcare costs.	Analysis of health insurance claims data of DAK	Discontinuation and number of (regular) dental visits. Occurrence, number and severity of systemic diseases. Healthcare costs in total and per healthcare sector.
SP3: observational study—questionnaire and clinical examination Target population: older persons in need of home care (≥60 years), selected according to one of the five care levels as assessed by the Medical Service of the statutory health insurance
Clinical status of the oral cavity, supplemented by orthopantomogram X-ray image (primary outcome in clinical assessment)	Clinical oral examination, panoramic X-ray	Evaluation of pathological changes in the oral region
Oral health status (primary outcome in questionnaire assessment)	OHAT	Oral Health Assessment Tool, 8 items36 37
Tooth status	DMF-S	Decayed-Missing-Filled Surface39
Periodontal condition	CAL BOP PISA	Clinical Attachment Loss40 41 Bleeding on Probing40 41 Periodontal Inflamed Surface Area40 41
Oral hygiene quality	API	Approximal Plaque Index42
Frailty	IADL	Instrumental Activities of Daily Living, 8 items43
Cognitive status	CDT	Clock Drawing Test, 2 items44
Intensity of GP commitment	F-HaBi	Questionnaire on the intensity of GP commitment, 7 items45
Sociodemographic factors	Single items	Gender, age, level of care, migration status
SP4: three consecutive expert workshops Target population: sample of experts from stakeholder’s associations, patient’s organisations and executive policymakers
Strategy to implement InSEMaP research findings in the different sectors of healthcare documented in a consortium working paper (primary outcome)	Workshops	Semistructured focus group guidelines and personal interviews are supposed to yield expert knowledge and implementation recommendations
Exploring options for clinical pathways to identify feasible, scalable clinical pathways of OHC in older persons in need of home care	Workshops

DAK, Deutsche Angestellten-Krankenkasse; EQ-5D-5L, 5-Level version of EuroQoL-5 Dimension; FG, focus group; GP, general practitioner; InSEMaP, Interaction of Systemic Morbidity and Oral Health in Ambulatory Patients in Need of Home Care; OHC, oral healthcare; SP, subproject.