Key points
Logic models are useful tools for program planning and evaluation. Tuberculosis (TB) programs can tailor logic models to fit their program's needs and activities.
About Logic Models
A logic model illustrates the association between your program's resources, activities, and intended outcomes.
Logic models can:
- Vary in size and complexity.
- Focus on a specific aspect of your TB program, such as a single evaluation question or objective, or encompass the entire program.
- Help inform evaluation plans.
- Reflect changes in activities, new evidence, and lessons learned.
Logic models are useful tools for program planning and evaluation because they:
- Guide staff in thinking about and evaluating their program.
- Identify assumptions and potential challenges.
- Assist in identifying intended programmatic outcomes.
- Organize, connect, and identify gaps in evaluation efforts.
Develop your Logic Model
Think of logic models as a series of if...then statements.
Resources/Inputs
Inputs are the resources (dollars, staffing, and materials) that go into a program or intervention — what we invest. Your program needs certain resources for operation.
Activities
Activities are events undertaken by the program or partners to produce desired outcomes — what we do. If you have access to them, then you can use them to accomplish your planned activities.
Output
Outputs are the direct, tangible results of activities — what we get. If you accomplish your planned activities, then you will hopefully deliver the services that you intended.
Outcome
Outcomes are the desired results of the program — what we achieve. If you accomplish your planned activities to the extent you intended, then your participants will benefit in certain ways.
- Short-term outcomes are the immediate effects of the program or intervention activities.
- Intermediate outcomes are the intended effects that occur over the midterm of the project period.
- Long-term outcomes refer to the desired program results.
Logic Model Example
Disclaimer
The following example is a logic model for using incentives and enablers to encourage patients to complete treatment for TB disease.
| Inputs | Activities | Outputs (No. and %) | Short-Terms Outcomes (%) | Intermediate-Term Outcomes (%) | Long-Term Outcomes (%) |
|---|---|---|---|---|---|
| • Funding to support bus passes or extended clinic hours • Adequate staffing to conduct activities • Support from management for conducting activities, including extended clinic hours |
• Provide incentives to patients • Extend hours for in-patient DOT • Train staff on strategies for following up after missed appointments • Follow up same day after missed appointments |
• Patients who are given bus passes • Patients who come to clinic during extended hours • Staff trained on strategies for following up after missed appointments • Patients who miss visits and are rescheduled within 24 hours |
• Decrease in patients who experience transportation and scheduling barriers • Increase in patients who arrive at the clinic for in-person DOT |
• Decrease in patients with missed doses of in-person DOT | • Increase in patients completing TB treatment |