Who was included?
A study of people attending a specialist clinic will not represent everyone in Belfast or across the UK. Its participants may have more severe hair loss, different ages or a greater interest in treatment than the wider population.
Look for the number of participants, their age range, the country and how they were recruited. A survey of surgeons describes the work of those who responded; it is not a count of everyone with hair loss.
What does the figure measure?
Prevalence means the proportion of a population with a condition. Incidence describes new cases over a stated period. A count of medical records with a previous diagnosis can include people whose hair has since regrown.
In treatment research, an increase in measured hair density is different from the percentage of patients who said their hair looked better. Check which outcome the headline refers to and whether the improvement was compared with a placebo or another treatment.
How certain is the result?
Small studies can produce less precise estimates. Short follow-up may miss later changes, and different definitions of improvement can make studies difficult to compare.
Read the study’s limitations and funding information. A company announcement can describe useful early findings, but it is not a substitute for the complete results and independent assessment. A positive trial result does not by itself establish approval or availability in Northern Ireland.
Find the original sources
Our UK hair loss facts and statistics page brings together the figures, dates and source links. Use those links to check the population and measurement behind each number.
If a statistic has made you concerned about your own hair, bring the question to an appointment. Your history and a scalp examination are more useful for deciding the next step than matching yourself to a percentage.
Contact our Belfast team
Consultations are by appointment at Regus, Forsyth House, Cromac Street, Belfast BT2 8LA. Arrange a consultation or call 028 9600 0113. We will confirm the appointment details before you travel.
