# Patient Access Cohorts block

> Patient access cohort DataGrid with switchable grouping and outcome heatmap

Grouped DataGrid bucketing intake signals by area, booking strength, or hold risk. Color-graded heatmap cells, footer totals, hold-risk filter, cohort benchmark. ReUI DataGrid, Frame, Badge; shadcn Button, Separator. Intake triage, cohort analysis.

- Type: Pro block
- Category: [Grouping](https://web.dev.reui.io/blocks/data-grid/grouping.md)
- Page: https://web.dev.reui.io/blocks/data-grid/grouping/data-grid-grouping-3
- Docs (Base UI): https://web.dev.reui.io/docs/components/base/data-grid.md
- Docs (Radix UI): https://web.dev.reui.io/docs/components/radix/data-grid.md
- MCP: `get_block("data-grid-grouping-3")`
- Built with: Badge, Button, Data Grid, Field, Frame, Hover Card, Input Group, Progress, Select, Separator, Switch, Tabs
- Installs with a ReUI Pro or Ultimate license; setup: https://web.dev.reui.io/docs/license-setup

## Best for

Intake signals regrouped by area, booking strength or hold risk, with heat cells whose hover card compares each rate to the cohort

## Agent notes

- Replace `COHORTS`; each question carries a `total` and per-outcome counts that the heat cells turn into rates
- `handleExport` only raises a toast; connect it to your BI export
- `getCellIntensity` sets heat tiers from fixed rate thresholds, tighter for risk outcomes; retune them for your data

## When not to use

- Sections that each repeat their own column header row: use [Editorial Pipeline](https://web.dev.reui.io/blocks/data-grid/grouping/data-grid-grouping-6.md) (`get_block("data-grid-grouping-6")`)
- Collapsible stage rows over a task list with owners, due dates and signal badges: use [Roadmap by Stage](https://web.dev.reui.io/blocks/data-grid/grouping/data-grid-grouping-1.md) (`get_block("data-grid-grouping-1")`)

## Third-party libraries

- TanStack Table v9: [API reference](https://tanstack.com/table/v9/docs/framework/react/reference/index), [docs](https://tanstack.com/table/v9/docs/framework/react/quick-start)
- Sonner v2: [API reference](https://sonner.emilkowal.ski/toast), [docs](https://sonner.emilkowal.ski/getting-started)

## Install

```bash
npx shadcn@latest add @reui/data-grid-grouping-3
```

## About Grouping blocks

### When to use

- Records bucketed under collapsible group rows by stage, region or risk band, with a count or subtotal on each
- Parent and child hierarchies of any depth, such as a bill of materials or an org chart, rolled up per level
- Stage pipelines laid out as stacked sections, each its own table that repeats the column header row

### When not to use

- Group rows built from the bare parts in your own page, with no toolbar or demo records: use [Data Grid](https://web.dev.reui.io/components/data-grid.md) (`get_component("data-grid")`)
- A flat record list paged at the foot, with no heading rows between records: use the [Base blocks](https://web.dev.reui.io/blocks/data-grid/base.md)
- Each record opening in place onto its own sub-tasks or a rail of check cards: use the [Expansion blocks](https://web.dev.reui.io/blocks/data-grid/expansion.md)

### Agent notes

- Each page.tsx wraps the view in a `min-h-svh` main under an sr-only `h1`, and the view adds a padded `max-w-7xl` section; drop both inside an app shell
- Search and filters run in the browser over every demo row, and `manualPagination` leaves the rows unsliced with no pager; move both to your API at scale
- Create, open and export buttons change no data and only raise a sonner `toast`; point them at your own routes and API

Every ReUI item has a twin like this one; the index is https://web.dev.reui.io/llms.txt. Agents with the ReUI MCP (https://web.dev.reui.io/docs/mcp) get the same guidance from the getters named above.