What is click-through rate (CTR)?
Click-through rate (CTR) is the percentage of people who click a link, ad or search result after seeing it, calculated as clicks divided by impressions. For hospitals it shows whether an ad or listing is relevant and appealing to the people seeing it, but it measures attention, not appointments, and must be read alongside conversion and lead quality.
Why it matters for hospitals
A low CTR on search ads often means the wrong keywords or weak ad copy, which raises costs. In organic search, CTR shows whether titles and descriptions match what patients are looking for. With AI summaries answering more queries directly, falling CTR can reflect search changes rather than poor work.
How to put it into practice
- Review CTR by keyword and query, not only by campaign.
- Write ad copy that names the specialty, location and booking route, within NMC and ASCI norms.
- Rewrite page titles and meta descriptions for pages with high impressions and low CTR in Search Console.
- Remove irrelevant search terms with negative keywords so CTR reflects real intent.
- Always check what happened after the click: bounce, enquiry and appointment.
The common mistake
Chasing a higher CTR with sensational or fear-based copy, which can attract the wrong clicks and breach advertising rules.
An illustrative example
A clinic’s knee pain ads had a strong CTR but few bookings. The search terms showed many clicks from people seeking home exercises, so negative keywords were added; CTR dipped and bookings rose. (Composite example, not a specific hospital.)
Related terms
Further reading
- Ad copy for doctors: compliant, specific, clickable
- Keywords that book appointments vs keywords that waste budget
Part of the healthcare growth and digital glossary. Last reviewed 7 October 2026.