Your Research Starts With One Good Question: The PICO Framework Every Researcher Must Know

Dr. Hammad Ali walked into Room 4B with the energy of a man who had just discovered fire. His white coat was slightly wrinkled, a sign, Dr Yaqoob had learned over the years, that the PGR Year 1 trainee had been on-call the night before but had not gone home. He was carrying a notepad with three pages of handwritten notes and the word “RESEARCH IDEA” underlined twice at the top.

“Sir, I have it!” Dr. Hammad declared, dropping into the chair across from Dr. Yaqoob’s desk. “My research topic. I want to do research on gallbladder surgery.”

Dr. Yaqoob looked up from his screen, took off his glasses, and smiled the patient smile of a man who had heard this exact sentence (or some variation of it) many times in his career.

“Gallbladder surgery,” he repeated. “All of it?”

Hammad blinked. “Well… not all of it. Laparoscopic cholecystectomy in Pakistan.”

“So, every lap chole in the country, every technique and every complication?”

Hammad’s enthusiasm flickered. “When you say it like that…”

Dr. Sumaira Talib, who was reviewing a consent form at the adjacent desk, did not look up but permitted herself a small smile. She had been through this exact conversation only a few days earlier. She still remembered the gentle but precise way Dr. Yaqoob had dismantled her own brilliant idea of “researching surgical outcomes in Pakistan.”

“Sit down, Hammad,” Dr. Yaqoob said, pulling out a whiteboard marker. “Today we are going to learn one of the most important skills in all of medical research. Without this, you cannot write a research proposal /synopsis, you cannot get ethical committee / Institutional review board approval, you cannot get published, and you most certainly cannot help any patients. We are going to learn how to ask one good question.”

Why a Good Research Question is the Foundation of Everything

Dr. Yaqoob stood and wrote four letters on the whiteboard in large capitals: P, I, C, O.

“Every piece of research in medicine, whether it is a randomised controlled trial (RCT) published in the Lancet or an FCPS dissertation submitted to the CPSP, begins with a clearly formulated research question. The research question determines your study design, your sample size, your inclusion criteria, your statistical method, and ultimately whether your paper gets accepted or rejected.”

“I’ve seen brilliant doctors waste months because they chose a topic instead of a question,” Dr. Yaqoob continued. “A topic is a starting point. A research question is a destination. You need the destination before you begin the journey.”

“Research is not rocket science. It is a skill, and skills can be taught.” (Dr. Muhammad Yaqoob)

Evaluators specifically look at whether your research question is focused, feasible, novel, and ethical. A vague question leads to a rejected research proposal. A sharp question, built using the PICO framework, signals immediately that you know what you are doing.

The PICO Framework: Breaking Down Your Research Question

“PICO is not a magic formula,” Dr. Yaqoob said, tapping the whiteboard. “It is a thinking tool. It forces you to be specific about four things: who you are studying, what you are doing or observing, what you are comparing it to, and what you expect to measure at the end.”

Here is what each letter stands for:

“Think of PICO like a GPS,” he explained. “Without it, you might start driving towards ‘Lahore’ in general. With it, you have the exact coordinates of your destination down to the street and the building number.”

Hammad stared at the table, his pen moving quickly. “So my lap chole topic becomes…” he muttered, writing. Dr. Yaqoob waited.

“‘In adult patients undergoing elective laparoscopic cholecystectomy at UPMED, does low-pressure pneumoperitoneum reduce shoulder-tip pain at 24 hours after surgery, compared with standard-pressure pneumoperitoneum?’” Hammad read back, looking up with slightly wider eyes.

“Now THAT,” said Dr. Sumaira, finally looking up from her consent form, “is a research question.” Dr. Yaqoob simply nodded.

Step-by-Step: How to Build Your PICO Research Question

Step 1: Start With a Clinical Problem You Have Observed

The best research questions come from clinical practice. If you are seeing the same problem repeatedly in your ward or OPD, that is your signal. Pakistani doctors have access to a rich and largely understudied patient population with unique disease burdens. Think about:

• The most common complication you manage that lacks local data
• A treatment you use daily but for which no Pakistani RCT exists
• A diagnostic gap you notice between what international guidelines recommend and what is actually available here
• A drug whose dosing has only been studied in Western populations

Dr. Junaid Rashid, who had been quiet in the corner reviewing a patient file, put it down. “I’ve treated patients for 15 years and published only one paper,” he said slowly. “But I notice that many of my hypertensive patients in the medicine OPD stop taking their tablets after a few months. Their blood pressure stays uncontrolled. Nobody here has measured how common this is, or why…”

“That, Dr. Junaid, is your P,” said Dr. Yaqoob. “Hypertensive patients attending the medicine OPD of a tertiary care hospital in Lahore. That’s a patient population for which the world does not have enough local data. Keep going.”

Step 2: Define Your P (Patient or Population)

Be specific. “Diabetic patients” is not a population. “Adult patients (18–65 years) with newly diagnosed Type 2 Diabetes Mellitus, attending UPMED outpatient department, with no prior insulin therapy” is a population.

Ask yourself:

• What is the age range?
• Which gender?
• What is the setting (OPD, ward, ICU, community)?
• What stage or severity of the disease?
• What important exclusions are there? (pregnant women, co-morbidities, prior treatment)

Step 3: Define Your I (Intervention or Exposure)

What are you studying? In an interventional study, this is a treatment, procedure, or program. In an observational study, this is an exposure or a risk factor. When the I is an exposure rather than a treatment, many researchers call the framework PECO (Population, Exposure, Comparison, Outcome), or PEO when there is no comparison group. PICO is used for interventions. Be specific about:

• The exact intervention (drug name, dose, duration, route)
• The protocol or procedure (if it is a surgical technique or diagnostic test)
• The exposure (smoking pack-years, BMI category, socioeconomic status)

Step 4: Define Your C (Comparison)

Research is almost always about comparison. You must know what you are comparing against. This is usually:

• Standard of care or existing treatment
• Placebo or no intervention
• An alternative diagnostic test
• A different dose or duration of the same intervention

If your study has no comparison group, for example, a descriptive prevalence study, the C can be marked as “N/A” or “None.” This is perfectly valid for certain study designs.

Step 5: Define Your O (Outcome)

This is what you will actually measure. A good outcome is:

• Measurable and objective (HbA1c, mortality rate, wound infection rate)
• Clinically meaningful (matters to the patient and to practice)
• Feasible to measure in your setting (you can actually get this data)
• Time-bound (measured in how many weeks/months/years?)

Dr. Hassan Raza, who had slipped in quietly during the PICO table discussion and sat at the back, raised his hand. “Sir, just tell me the format. What does the final sentence look like?”

Dr. Yaqoob smiled. Dr. Hassan’s approach was predictable but the question was fair.

The PICO Sentence Formula

Let us apply this with a Pakistani-specific example for each type of doctor in the room:

Common Mistakes Pakistani Doctors Make (And How to Avoid Them)

Dr. Bushra Fatima, a PGR Year 4 trainee in Obstetrics and Gynaecology, had been taking notes throughout. She had learned about predatory journals the hard way. She was determined not to make another rookie mistake.

“Sir, before I understood PICO, my last proposal was returned by the ethics committee,” she said quietly. “They said my question was not clear.”

“That is more common than you think,” Dr. Yaqoob said. “Here are the mistakes I see most often:”

Mistake 1: Too broad a population.

“All patients with hypertension in Pakistan” is not feasible. Narrow it to your hospital, your department, a defined age group, and a defined time window.

Mistake 2: Vague outcome.

“Better blood pressure control” is not an outcome. “Reduction in systolic BP ≥10 mmHg at 8 weeks” is an outcome.

Mistake 3: No comparison when your question needs one.

Many Pakistani research students want to show that one treatment is better, or that an exposure is linked to an outcome, but then describe a single group without saying compared to what. If your question is comparative, you must name the C: standard care, another treatment, or patients without the exposure. Only a purely descriptive question (such as the frequency of a condition) can leave the C out, as explained in Step 4.

Mistake 4: Confusing the topic with the question.

“Preeclampsia in young Pakistani women” is a topic. “Among primigravida women under 25 years presenting to UPMED Gynaecology, is preeclampsia with severe features (for example BP ≥160/110 mmHg) associated with higher rates of placental abruption compared to women with preeclampsia without severe features?” is a research question.

Mistake 5: Choosing an unfeasible outcome.

If your outcome requires equipment your hospital does not have, or if your patients cannot sustain follow-up, your study will fail in execution, even if it was brilliant on paper. Pakistani doctors must design research around their actual resources.

A Note for FCPS, MD, MS, MDS, M.Phil. and Master Trainees

If you are a postgraduate trainee preparing your synopsis/research proposal, the research question is evaluated explicitly. The synopsis format asks you to state your “Objectives” and, for comparative studies, a “Hypothesis.” Both flow directly from your PICO question. A well-formed PICO question allows you to write your primary objective as a single sentence. A descriptive study that only measures frequency does not need a hypothesis. A comparative study states the alternative hypothesis, usually two-sided (non-directional).

By the time Dr. Yaqoob capped his whiteboard marker, all six doctors in Room 4B had written at least one PICO question. Dr. Hammad had written three. Dr. Junaid had written one very quietly, folded the paper, and placed it in his pocket.

“Sir,” said Dr. Zunaira, who had barely spoken the whole session, “is it okay if my question seems very simple? Mine is just about whether chewing areca nut or gutka is linked to oral submucous fibrosis in our patients.”

“Dr. Zunaira,” said Dr. Yaqoob, “a simple question asked precisely is worth ten complex questions asked vaguely. Simple does not mean small. It means focused. And focused means publishable.”

Dr. Zunaira nodded slowly and wrote one more line in her notebook.