The GeKo-Integrated Service Delivery (ISD) model, focused on frailty management, was conceptualized by Dr. Sally Ahip in 2019 (Figure 1). It was inspired by the Canadian PRISMA model of care and was aligned with the World Health Organization’s ICOPE guidelines for older people (12, 13).

Figure 1

GeKo Integrated Service Delivery Model (GeKo-ISD)

The GeKo-ISD coordinates services between care agencies without requiring service consolidation (Figure 1). It leverages the existing publicly funded primary care infrastructure in Malaysia, hence minimizing the necessity for additional infrastructure or financial mechanisms and aiding translatibility (14). The GeKo-ISD has also adopted the WHO ICOPE framework and implements a systematic, evidence-based approach to frailty management. This included screening based on the intrinsic capacity domains using the PFFS-M, which encompasses domains identified in the ICOPE screening tool, followed by a comprehensive and person-centered assessment in primary care, development of a multi-domain personalised care plan that includes physical, mental, psychological, nutritional, and social intervention as well as links to specialised care, care plan monitoring, and caregiver and community engagement (15).

A family medicine specialist leads the GeKo-ISD initiative at publicly funded primary care clinics. The core multidisciplinary service providers in the GeKo-ISD primary care clinics included medical officers, assistant medical officers, dentists, nurses, pharmacists, nutritionists/dietitians, psychological officers, physiotherapists, occupational therapists, and healthcare assistants. The GeKo-ISD was developed for older persons aged 60 years and older, with clinical frailty scale (CFS) scores ranging from 4 to 7 or at least one geriatric syndrome and are willing to participate in assessment and intervention programmes. Older persons eligible for the GeKo-ISD were identified through various means; 1) Community health screenings for the older persons using the «Older Persons Health Screening Form», as mandated by the Ministry of Health Malaysia; 2) Older persons seeking care for acute or chronic medical conditions at primary care clinics offering GeKo services; 3) Referrals from the private health facilities including hospitals and private general practice clinics; and 4) Referrals from public health facilities including hospitals and primary care centres without GeKo services. Additional details on the GeKo-ISD have been included in Supplementary file 1.

The GeKo-ISD employs a case management system, which involves registering identified older people in the registry, coordinating planned multi-domain interventions by all healthcare professionals at the clinic level, and monitoring adherence to follow-ups and reassessments. Case managers are non-physician healthcare professionals, typically nurses, assistant medical officers, or healthcare assistants who have completed a two-day GeKo case manager programme. They are co-located with other GeKo health service providers and report to the GeKo clinic family medicine specialist and GeKo-trained doctor.

Baseline clinical evaluations done include blood pressure, grip strength and anthropometric measurements, the Timed-Up-And-Go-Test, and the PFFS-M. The PFFS-M is the standard frailty assessment tool used in all GeKo-ISD clinic. The PFFS-M evaluates fourteen health domains including mobility, function, cognition, social support, affect, medication, pain, weight loss, exhaustion, incontinence, vision, hearing, balance and aggression, which are important domains evaluated in a Comprehensive Geriatric Assessment (CGA) and the WHO-ICOPE (15). The PFFS-M has been validated for Malaysian older persons (16–18).

The personalized multi-domain GeKo-ISD intervention plan included group and individual exercise programmes, medication reviews, ADL (Activities of Daily Living) and IADL (Instrumental Activities of Daily Living) rehabilitation programmes, psychological intervention, oral health services, and community engagements. These intervention programmes are delivered in the primary care clinic.

All GeKo ISD patients will be reassessed after three months of intervention, similar to baseline. The GeKo specialist or medical officer may discharge the patient from the intervention plan to receive conventional outpatient care if the PFFS-M score has improved to the patient’s best capacity. Patients will be referred to GeKo clinic if they show clinical decline and changes in frailty status or PFFS-M scores after a stressor event, during routine outpatient care. If the PFFS-M score does not improve after 3 months of GeKo intervention, the GeKo specialist or medical officer should reevaluate the patient’s care plan.

Evaluation of implementation strategy

The WHO ICOPE implementation framework provides a scorecard for evaluating the capacity of services and systems to implement ICOPE. This scorecard was used in this study to assess the level of implementation accomplished and evaluates 19 elements, including the ability to engage and empower people and communities, facilitate coordination of service delivery by diverse providers, prioritise community-based care, improve governance and accountability systems, and enable overall system improvement. Each item is scored on a scale of 0 to 3, with total scores for ICOPE implementation ranging from 0 to 52. Three levels of implementation are determined: a) 0 to - no or little implementation; b) 22 to 36 - commencement of implementation; and c) 38 to 52 - sustained implementation (19).

Information to complete the scorecard was gathered through two methods:

i.

Documents (October 22 to April 23) related to the GeKo services (such as policies, clinical guidelines and the GeKo implementation module used by healthcare professionals (HCPs) providing services, monitoring and evaluation reports) were obtained from Sarawak State Health Department, stakeholders, and persons-in-charge (GeKo family medicine specialists or the GeKo-trained doctor) of GeKo clinics at each primary care centre; and

ii.

Structured interviews using the ICOPE implementation framework by a researcher (TCY) with key informants (KIs) identified from the above documents. KIs included policymakers, administrators and clinicians, who were involved in the overall planning, design, implementation, and monitoring of GeKo clinic services. IDIs were conducted either virtually or in-person in a room ensuring confidentiality, at a time suitable to the participant.

Effectiveness of GeKo intervention on frailty scores

The change in the PFFS-M scores between baseline and 3 months post GeKo clinic intervention was explored. The PFFS-M scores ranged from 0–43, with higher scores indicate greater frailty (10, 16, 20). Baseline sociodemographic variables included age, gender, ethnicity, marital status, education level, occupational status, household income, house ownership, living conditions, alcohol consumption, and smoking status. Other baseline variables collected included the PFFS-M, Katz ADL (21), Lawton IADL (22), and Timed Up and Go test (23). Description of these measures were included in Supplementary file 1.

The data presented above were taken from the patients’ case notes at Sarawak’s Samarahan division’s first three GeKo-ISD clinics between September 1st and April 30th, 2023. The Samarahan division, one of Sarawak’s twelve divisions on Borneo Island, is 18 kilometres southeast of Kuching, the capital city. Samarahan division is 4,967 km2 broad and has five districts. Samarahan division has 293,300 population, 12.5% of whom are 60 years or older. In this study, the three GeKo-ISD were in three districts with different care levels: a) Kota Samarahan health clinic-level 1 (family medicine specialist with special interest in geriatrics-led), sub-urban; b) Asajaya health clinic-level 2 ((family medicine specialist-led), rural; and c) Sadong Jaya health clinic-level 3 (trained medical officer-led), rural. The GeKo-ISD started in Kota Samarahan Health Clinic (HC) in October 2019 and expanded to Asajaya and Sadong Jaya HCs in June 2022. Kota Samarahan, Asajaya, and Sadong Jaya HCs were 18 km, 52 km, and 63 km from Sarawak General Hospital in Kuching.

Statistical Analysis

The scores of the ICOPE scorecard were computed using summation function. For the effectiveness analysis, all quantitative data was extracted from the case notes and GeKo Registry into a microsoft Excel file and then exported to SPSS Version 27. Participants were excluded if more than 20% of the data was missing. The Shapiro-Wilk test of normality and Kolmogorov Smirnov test were done to examine the normality of data distribution. If the data distribution were not normal, the Wilcoxon signed-rank test will be employed. P value less than 0.05 was considered statistically significant. Paired t-test analysis was used to compare PFFS-M mean scores at baseline and 3 months post intervention. P value less than 0.05 was considered statistically significant.