By North Essay Help Editorial Team · 8 October 2026

PICO Question Examples for Nursing (20 Examples by Question Type)

A PICO question turns a clinical problem into something you can search for. It names the Patient or population, the Intervention (or exposure), the Comparison and the Outcome. PICOT adds Time. The format comes from evidence-based medicine and was popularized in a 1995 ACP Journal Club article, "The well-built clinical question" (Richardson et al.).

Most students get stuck on two things: writing a question that's too broad to search, and using the intervention template for every question type. Below are 20 examples sorted by type, a template for each type, and the search terms that come out of each question.

PICOT components

Letter	Means	Ask yourself	Example
P	Patient, population or problem	Who, with what condition, in what setting?	Adults on a medical unit after hip fracture surgery
I	Intervention, exposure or issue	What are you doing or considering?	Early mobilization within 24 hours
C	Comparison	Compared with what? (can be "usual care" or nothing)	Mobilization after 48 hours
O	Outcome	What result do you want to measure?	Rate of pneumonia
T	Time (optional)	Over what period?	During the hospital stay

Written out: In adults on a medical unit after hip fracture surgery (P), does early mobilization within 24 hours (I), compared with mobilization after 48 hours (C), reduce the rate of pneumonia (O) during the hospital stay (T)?

Templates by question type

The question type decides the wording, and the type of study you'll look for.

Type	Template	Best evidence to look for
Intervention / therapy	In ___ (P), how does ___ (I) compared to ___ (C) affect ___ (O) within ___ (T)?	Randomized controlled trials, systematic reviews
Prevention	In ___ (P), does ___ (I) compared to ___ (C) reduce the risk of ___ (O) over ___ (T)?	Randomized controlled trials, cohort studies
Prognosis	In ___ (P), how does ___ (I) compared to ___ (C) influence ___ (O) over ___ (T)?	Cohort studies
Diagnosis	In ___ (P), is ___ (I) compared to ___ (C) more accurate in identifying ___ (O)?	Diagnostic accuracy studies
Etiology / harm	Are ___ (P) who have ___ (I) compared to those without ___ (C) at greater risk of ___ (O) over ___ (T)?	Cohort and case-control studies
Meaning	How do ___ (P) with ___ (I) perceive ___ (O) during ___ (T)?	Qualitative studies

Meaning questions often don't have a comparison, so they are sometimes written as PIO or PICo (Population, phenomenon of Interest, Context).

20 PICO and PICOT examples

Intervention

In adults with type 2 diabetes in primary care (P), does nurse-led telephone follow-up (I) compared with usual clinic visits (C) improve HbA1c (O) over 6 months (T)?
In post-operative adults (P), does scheduled analgesia (I) compared with as-needed analgesia (C) reduce pain scores (O) in the first 48 hours (T)?
In older adults with delirium in hospital (P), do non-drug interventions such as reorientation and sleep hygiene (I) compared with usual care (C) shorten the duration of delirium (O) during admission (T)?
In nursing students (P), does high-fidelity simulation (I) compared with case-study teaching (C) improve clinical judgment scores (O) over one semester (T)?
In adults with heart failure (P), does daily weight monitoring with a teaching plan (I) compared with standard discharge teaching (C) reduce 30-day readmission (O)?

Prevention

In adults in long-term care (P), does hourly rounding (I) compared with no scheduled rounding (C) reduce falls (O) over 3 months (T)?
In ICU patients on mechanical ventilation (P), does chlorhexidine oral care (I) compared with standard oral care (C) reduce ventilator-associated pneumonia (O) during ventilation (T)?
In hospitalized adults at risk of pressure injury (P), does a 2-hourly turning schedule (I) compared with a 4-hourly schedule (C) reduce pressure injuries (O) during admission (T)?
In health care workers (P), do alcohol-based hand rubs (I) compared with soap and water (C) improve hand hygiene compliance (O) over 6 months (T)?

Prognosis

In adults after a first stroke (P), how does early rehabilitation (I) compared with delayed rehabilitation (C) influence functional independence (O) at 6 months (T)?
In older adults with hip fracture (P), how does pre-fracture mobility (I) compared with pre-fracture immobility (C) influence return home (O) within 3 months (T)?
In adults with sepsis (P), how does an elevated lactate on admission (I) compared with a normal lactate (C) influence mortality (O) within 28 days (T)?

Diagnosis

In older adults in the emergency department (P), is the CAM (Confusion Assessment Method) (I) compared with clinical judgment alone (C) more accurate in identifying delirium (O)?
In adults with suspected sepsis (P), is an early warning score (I) compared with vital signs alone (C) more accurate in identifying deterioration (O)?
In newborns (P), is pulse oximetry screening (I) compared with physical examination alone (C) more accurate in detecting critical congenital heart disease (O)?

Etiology / harm

Are night-shift nurses (P) who work 12-hour shifts (I) compared with 8-hour shifts (C) at greater risk of medication errors (O)?
Are adults with an indwelling urinary catheter (P) for more than 3 days (I) compared with less than 3 days (C) at greater risk of urinary tract infection (O) during admission (T)?

Meaning

How do new graduate nurses (P) experience the transition to practice (I) during their first year (T)?
How do family caregivers (P) of people with dementia (I) perceive respite services (O)?
How do nursing students (P) experience their first clinical placement (I) in acute care (T)?

These examples are written to be searchable. They do not claim what the evidence shows; your literature search answers that.

From PICO to search terms

Each part of your question becomes a search concept. Combine synonyms with OR and concepts with AND.

Example question 6: hourly rounding and falls in long-term care.

Concept	Search terms (CINAHL / PubMed)
P	"long-term care" OR "nursing home*" OR "residential care"
I	"hourly rounding" OR "intentional rounding" OR "purposeful rounding"
O	fall* OR "accidental falls"

Search: (P terms) AND (I terms) AND (O terms). Leave out C and T at first; add them only if you get too many results.

Tips:

Use subject headings as well as keywords: CINAHL Headings in CINAHL, MeSH terms in PubMed.
Use for truncation (fall finds fall, falls, falling).
Filter by date (usually the last 5 to 10 years), language and study type.
Canadian programs often accept guideline sources too. In Ontario, RNAO Best Practice Guidelines are a common starting point.

Common mistakes

Mistake	Example	Fix
Too broad	Does exercise help patients?	Name the population, the exercise and the outcome
Two interventions in one	Does education and exercise reduce falls?	Pick one intervention, or compare them
Outcome you can't measure	Does rounding make patients happier?	Use a measurable outcome: satisfaction score, falls, call-bell use
Wrong template	Using "compared to" in a meaning question	Use the meaning template (PICo)
Answer built into the question	How does early mobilization reduce pneumonia?	Ask whether it does: "does ... reduce ...?"

Frequently asked questions

What is the difference between PICO and PICOT?

PICOT adds Time: the period over which you'll measure the outcome. Many nursing programs ask for PICOT; check your rubric.

Does every PICO question need a comparison?

No. If there's no clear alternative, the comparison can be "usual care" or left out. Meaning questions usually have no comparison.

What is a PICo question?

A version for qualitative questions: Population, phenomenon of Interest and Context. It suits questions about experiences and perceptions.

Which databases should I search?

CINAHL and PubMed (MEDLINE) are the core databases for nursing. The Cochrane Library is useful for systematic reviews.

How many sources do I need for an EBP paper?

It depends on the assignment. Many undergraduate EBP papers ask for 5 to 10 peer-reviewed sources published in the last 5 to 10 years.

Can I use a PICO question for my capstone?

Yes. Most nursing capstone and evidence-based practice projects start with a PICOT question.

Related guides and tools

Sources: Richardson, W. S., Wilson, M. C., Nishikawa, J. and Hayward, R. S. (1995). The well-built clinical question: a key to evidence-based decisions. ACP Journal Club, 123(3), A12 to A13. University library evidence-based practice guides on PICO question types.