Chiropractic AI Citation Study

This was the biggest finding in the entire study. How your website is organized — specifically, your heading hierarchy — is the strongest predictor of whether AI recommends you. Nothing else comes close.

The effect size was massive: Cohen's d = 1.14. In research terms, anything above 0.8 is considered a “large” effect. This is well beyond that. It means the gap between practices with good heading structure and those without is huge.

Practices with sequential heading hierarchies — meaning they use H1, then H2, then H3 in proper order — show 2.8x higher citation rates than those with messy or missing heading structure.

87% of cited practices use a single H1 tag on their pages. This sounds like a small detail, but it matters because it tells AI exactly what the page is about. When you have multiple H1 tags or no clear structure, AI struggles to understand your content.

This is the one that surprises most people. Domain authority — the metric that traditional SEO is built around — has virtually no relationship with AI recommendations.

The correlation was r = -0.05. That's essentially zero. For context, a correlation of 1.0 means a perfect relationship. A correlation of 0.0 means no relationship at all. At -0.05, domain authority is statistically irrelevant to whether AI recommends you.

What this means in plain terms: having lots of backlinks or a high domain authority score does not help you get recommended by AI. A brand-new website with good structure can outperform a well-established one with a high DA score.

This is a fundamental shift. For two decades, the SEO playbook has been “build more links, raise your domain authority.” That playbook doesn't apply to AI search. AI cares about what's on your page and how it's organized — not who links to you.

When AI picks chiropractors to recommend, it overwhelmingly picks independent practices. Between 82% and 89% of all AI citations go to independent, owner-operated practices — not franchise locations or corporate chains.

This makes sense when you think about it. Independent practices tend to have deeper, more specific content. They write about the exact conditions they treat. They have pages about their specific approach. Corporate chains tend to use templated websites that say the same thing in every city.

AI is looking for depth and specificity. It wants to understand what makes your practice different. Cookie-cutter content doesn't give AI anything useful to work with. Original, detailed content does.

If you're an independent chiropractor, this is great news. You don't need a big brand. You don't need a national marketing budget. You need a well-structured website with content that shows your expertise.

Here's something most people don't realize: ChatGPT, Perplexity, and Gemini almost never agree on which chiropractor to recommend.

Only 8.7% of practices that received a citation were recommended by all three platforms. That means over 91% of the time, a practice cited by one AI is not cited by the others.

Each AI model processes content differently. They weight different signals. They pull from different sources. So optimizing for just one platform leaves you invisible on the others. You need an approach that works across all of them.

On top of that, only about 30% of brands that appear in one AI response show up again in the next consecutive answer to the same query. AI recommendations are volatile. Consistent visibility requires ongoing optimization, not a one-time fix.

Beyond overall heading hierarchy, we found several specific content structure signals that correlate strongly with AI citations.

HTML lists are a big one. Pages with bullet points and numbered lists are roughly 3x more likely to be cited. Cited practices average 13.75 list sections per page, compared to just 0.81 for non-cited practices. AI loves content it can easily parse and extract from.

Schema markup also matters. Practices with 3 or more schema types on their site — like LocalBusiness, MedicalBusiness, FAQPage, or Service schema — are about 13% more likely to be cited. Schema gives AI structured, machine-readable data about who you are, what you do, and where you are.

These factors stack. A practice with clean headings, plenty of lists, and robust schema markup is giving AI everything it needs to understand and recommend them. A practice without these things is making AI guess — and AI usually guesses in favor of someone else.

Content that was published or updated within the last 3 months is cited at roughly 3x the rate of older content. AI models prefer current information. This is different from traditional SEO, where an old page with lots of backlinks can rank for years without an update.

In AI search, recency is a signal. If your website hasn't been updated in a year, AI may treat it as stale and look elsewhere. This is especially true for content that touches on treatments, techniques, or patient questions that evolve over time.

This is why AEO is not a one-time project. It requires ongoing content updates and freshness signals. Practices that publish and update regularly stay visible. Those that “set it and forget it” slowly fade from AI recommendations.

The chiropractic AI citation landscape is wide open. With an average citation rate of only 1.6%, almost no one is being recommended by AI right now. That's not a problem — it's an opportunity.

The practices that win in AI search are not the ones with the biggest budgets or the most backlinks. They're the ones with the best-structured websites. Clean headings. Dedicated service pages. Structured data. Fresh content. HTML lists.

None of this is expensive. None of it requires a huge team. But it does require knowing what to do and doing it consistently. That's what we help with.