Q: How to write research objectives?

Answer: Writing research objectives requires you to express clearly what you are planning to do in your study.

What are research objectives?

Research objectives are the specific goals that you are going to achieve in your study.

Steps to write research objectives

1. Define the research problem

Identify a gap in the clinical or scientific literature. Ground the problem in patient outcomes, disease burden, or an unresolved mechanistic question. A well-defined problem naturally constrains your objectives.

2. Check existing literature

Conduct a scoping review to understand what is already known. This prevents duplication, reveals methodological limitations in prior work, and highlights where new objectives can make the most contribution.

3. Identify the study population and setting

Specify who will be studied: patient demographics, inclusion/exclusion criteria, clinical setting (e.g. ICU, outpatient, community). Objectives must align with what is feasible in your target population.

4. Formulate a primary research question

Use a structured framework to build a clear, answerable question. PICO (Population, Intervention, Comparison, Outcome) works well for clinical research. For qualitative or observation research, use the SPIDER framework (Sample, Phenomenon of Interest, Design, Evaluation, Research type) or PEO (Population, Exposure, Outcome).

5. Draft objectives using SMART criteria

Write objectives that are Specific, Measurable, Achievable, Relevant, and Time-bound. Each objective should begin with an action verb: "to determine," "to compare," "to evaluate," "to assess." Avoid vague language like "to understand".

6. Align objectives with study design and endpoints

Each objective must map directly to a measurable endpoint and a study design capable of answering it. An explanatory objective needs a design that can establish causality (e.g. RCT, interrupted time series); a descriptive objective suits a cross-sectional or cohort study.  

Types of research objectives, with examples

Type	Purpose	Example	Typical Study Design
Descriptive	To describe the characteristics, frequency, or distribution of a health condition	To determine the prevalence of hypertension among adults attending a rural clinic	Cross-sectional study
Exploratory	To investigate a relatively new or poorly understood issue and identify possible factors	To explore possible lifestyle factors associated with long COVID symptoms in adolescents	Pilot study / Qualitative study
Analytical	To examine relationships or associations between variables	To assess the association between smoking and chronic obstructive pulmonary disease (COPD) in adults	Case-control or cohort study
Comparative	To compare outcomes, treatments, or interventions between groups	To compare the effectiveness of insulin therapy versus oral medication in controlling type 2 diabetes	Randomized controlled trial
Evaluative	To evaluate the impact or success of a healthcare program or intervention	To evaluate the effectiveness of a hospital hand hygiene program in reducing surgical site infections	Program evaluation / Interventional study
Predictive	To predict the likelihood of a future health outcome based on risk factors	To develop a model predicting the risk of stroke in patients with atrial fibrillation	Cohort study / Predictive modeling study

 

Why are research objectives important?

Research objectives are important because they

1. define the scope of the study
2. give direction to the research
3. help you maintain focus while writing your research paper
4. reduce wastage of time, money, and energy