Socioeconomic status (SES) is one of the most important determinants of health (1). Poverty adversely influences health outcomes for individuals (2–4). Persons living with income insecurity have greater rates of chronic health conditions and a higher risk of reduced lifespan (3–5). The COVID-19 pandemic has recently highlighted the effects of income disparities for communicable diseases: those living in economically deprived neighborhoods have disproportionally greater odds of contracting the infection, of being hospitalized and of dying from COVID-19 complications (6–8).
The pandemic has also highlighted gaps in socio-demographic data collection. Compared to international settings (7, 9), Canada lags in the collection and reporting of social determinants of health; these are associated with differences in COVID-19 infection rates and outcomes (10). Some gaps have been partially addressed, leading to attention and efforts to direct appropriate resources to communities at greater risk (11, 12).
Primary care represents an ideal setting for the collection of information on social determinants of health, and for taking action on these (13–16). Family physicians and their teams provide community-based longitudinal care for patients and families, building relationships based on trust, and generating knowledge about the context patients live in (13, 17). The pandemic has led to increased attention to social context; family physicians have been provided with tools to address poverty and other social determinants of health during and after the crisis (18).
As with other major risk factors such as tobacco use, a critical first step involves clinicians asking their patients so that risk status can be identified and documented (19, 20). An evidence-based tool for poverty screening and intervention in primary care has been developed and studied by Bloch et.al (21, 22). It is central to current screening recommendations in Ontario and Canada (22). The screening questions are: “Do you ever have difficulty making ends meet at the end of the month?” (sensitivity 98%, specificity 40% for living below the poverty line) (2) and “Have you filled out and sent in your tax forms?”
However, in Canada, screening for poverty is not currently a routine part of family practice, with some exceptions (23). Barriers include lack of provider training, lack of time, lack of knowledge and expertise, and difficulty changing workflows (24, 25). There may be multiple competing priorities as family physicians look after many issues and conditions that require attention. Pilot work in several sites in Toronto determined that poverty screening and intervention were feasible in the practices studied (14, 23). However, these sites had a mandate to address social inequities as a priority, practice populations with high levels of poverty, dedicated champions and resources devoted to the intervention. An exploratory study in a variety of “real world” primary care settings found that only 9% of patients were screened, despite training and the presence of motivated healthcare providers (24).
Implementing poverty screening requires addressing barriers. This is not a trivial activity in practices already overwhelmed by current care demands. Lack of time is one of the most significant barriers to change in primary care (26). In one highly cited study, Yarnall noted in order “to fully satisfy the US Preventive Services Task Force recommendations, 1773 hours of a physician’s annual time, or 7.4 hours per working day, is needed for the provision of preventive services” (27).
We used Diffusion of Innovations theory to plan the intervention (28). Implementation may be more successful if the intervention is perceived as not being complex, as taking little time or practice resources, and as providing high value compared with usual care (28–30). Our team had previous experience implementing screening interventions and integrating those in primary care Electronic Medical Records (EMRs) (31, 32). We used this knowledge for the design of the poverty screen. We adapted approaches (EMR prompts, templates) found as part of other screening workflows that physicians were already using and were familiar with (33) to provide an intervention that was simple and easy to use.
We then devised an implementation strategy consistent with good design principles, considering inner and outer settings (30). Briefly, a pilot was implemented and evaluated in a single office, with four motivated family physicians; this demonstrated initial feasibility in a community-based setting similar to ours. We scaled up using strategies known to be effective (presence of champion, building consensus on the importance of the issue, clinician education, leadership endorsement, availability of resources, adapting and tailoring strategies to local context) (30). We implemented and evaluated the poverty screening strategy in a large community primary care inter-professional team in Toronto, Ontario, Canada, the North York Family Team (NYFHT, http://nyfht.com).
An innovation in our approach was targeted screening for poverty. Using postal codes, we identified patients living in the most deprived neighborhoods. We expected that those areas included more patients living with poverty, and therefore would increase screening efficiency. The total number of patients requiring screening and the workload for physicians would be much lower than that required for universal screening. This would enhance trialability (28) through a limited initial implementation.
While universal screening for poverty is the recommended approach (16, 21, 22), targeted screening may present a useful initial step in the face of continuing limited update of screening. A similar approach (targeted vs universal screening) is currently being tested as part of a comparative effectiveness trial for major depression screening in adolescents, a screen with limited uptake (34).
If successful, further phases are being planned. A logic model is presented in Additional File 1. Phase One, reported here, consisted of assessing the feasibility of carrying out targeted screening for poverty and providing liaison to income security supports, and then assessing the feasibility of having a Case Worker collect income information sufficient to enable the calculation of sensitivity and specificity of the screening questions in this targeted study population. In Phase Two, we will determine sensitivity and specificity of the screening questions, when applied to a targeted population. In Phase 3, we will evaluate the effect of the intervention on patient household income.
Objectives
Our objectives were to evaluate the feasibility and extent of adoption of targeted poverty screening; to determine the proportion of patients referred for income optimization; and to evaluate the feasibility of capturing income information for patients seen after referral in a large, community-based interprofessional primary care team.