Penchansky and Thomas' dimensionality of access framework
| Availability | The extent to which the provider has requisite resources (eg, equipment, supplies) to meet service-user needs |
| Accessibility | Geographic accessibility is determined by how easily service users can physically reach the provider's location |
| Acceptability | The extent to which service users and providers are comfortable with each other's immutable characteristics (eg, sex, age, status) |
| Affordability | The extent to which the provider's charges relate to service user's ability and willingness to pay |
| Accommodation | The extent to which the provider's services are organised to meet service user's constraints and preferences (eg, opening times, communications, appointments) |
Source: Adapted from McLaughlin and Wyszewianski.36