Table 2

Initial programme theory: set out as assumptions of what is expected of the OPSS intervention

Service usersCommissioners and providers
  • Easy to find and access

  • Convenient

  • Easy to use for (fits in with 21st Century life)

  • Provides privacy and minimises embarrassment/judgement by others

  • As ‘good’ as face to face

  • Self-sampling is easy to do, and people are willing to do these

  • People believe the results of the self-sample

  • Saves money

  • Frees up capacity (efficient way to manage asymptomatic service users)

  • Saves time for providers

  • Provides the additional capacity to deal with demand

  • Everyone has equal access

  • OPSS, online postal self-sampling.