Health Equity and Disparities

Core Concepts

Equality vs equity vs justice

• Equality: everyone gets the same thing.
• Equity: everyone gets what they need to reach the same outcome.
• Justice: the system is changed so the barrier no longer exists.

The classic illustration: three people of different heights are watching a game over a fence. Equality gives all three the same box — the shortest still cannot see. Equity gives boxes of different heights so all three can see. Justice removes the fence.

The social determinants of health

• Economic stability: employment, income, food security, housing stability, medical debt.
• Education access and quality: early childhood education, literacy, high school graduation.
• Health care access and quality: insurance coverage, a usual source of care, health literacy.
• Neighborhood and built environment: housing quality, transportation, safe places to be active, environmental exposures.
• Social and community context: social support, community cohesion, discrimination, civic participation.

The domains interact. Losing a job can mean losing insurance, which can mean delaying care, which can turn a manageable condition into an emergency admission.

Disparities, inequities, and vulnerable populations

A disparity is a measurable difference; an inequity is a difference that is avoidable and unfair. Groups that experience disadvantage more often include people with low incomes, racial and ethnic minority groups, rural residents, people with disabilities, LGBTQ+ people, older adults, and people with limited English proficiency. Intersectionality matters: overlapping identities — for example, a disabled immigrant with low income — can compound disadvantage. And person-first language applies here: "people with low incomes," "people experiencing homelessness," never labels that reduce a person to a condition.

Implicit bias and discrimination in health care

Implicit bias refers to automatic, unconscious associations that shape perception and behavior — everyone has them, including well-intentioned clinicians. It can surface as shorter visits, different pain assessment, or different treatment offers, often against the clinician's conscious values.

Defenses work at two levels. Individually: self-reflection, structured assessment tools and checklists that standardize data collection, and deliberately re-checking decisions. Systemically: training, accountability structures, diverse teams, and policies that catch bias before it harms. Fixing bias is not about shaming individuals; it is about building systems that make bias harder to act on.

Health literacy and clear communication

Health literacy is the ability to obtain, process, understand, and use health information to make decisions. Low health literacy is common, often invisible, and linked to worse medication management, more hospitalizations, and poorer outcomes. The burden is on the communicator: use plain language, teach-back ("Please tell me in your own words how you will take this"), pictures, and interpreters. Assume limited health literacy, and verify understanding every time.

What nurses can do — within scope and policy

• Screen for social needs (food, housing, transportation, utilities) using the facility's process, and connect patients to social work, case management, and community resources.
• Use teach-back with every patient, not just the ones who "seem" at risk.
• Advocate for interpreter services, accessible education materials, and equitable policies.
• Document honestly — accurate data is the fuel for equity work.
• Individual action varies with role, setting, and institutional policy; closing equity gaps also requires team, organizational, and policy work beyond any one nurse.

Common Confusions